[docs] Update README.md to match Introduction section of the docs

README.md

@@ -5,63 +5,109 @@
 
 <h1 align="center">MUI X</h1>
 
-The [main repository](https://github.com/mui/material-ui) of MUI focuses on providing a ready-to-use design system, as well as empowering developers to build their own.
+MUI X is a collection of advanced UI components, including a [data grid](https://mui.com/x/react-data-grid/) and [date and time pickers](https://mui.com/x/react-date-pickers/getting-started/).
 
-This MUI X mono-repo gathers the advanced MUI components – it's an extension of the core.
-The fundamental features are MIT licensed, and the more advanced ones commercial.
+These components are significantly more complex than the ones found in the [MUI Core](https://github.com/mui/material-ui/) libraries.
+They feature advanced functionality for data-rich applications and a wide range of other use cases.
+
+MUI X is **open core**—base components are MIT-licensed, while more advanced features require a Pro or Premium commercial license.
+See the [Licensing page](https://mui.com/x/introduction/licensing/) for details.
 
 ## Components
 
-- [Data grid](https://mui.com/x/react-data-grid/)
-- [Date / Time pickers](https://mui.com/x/react-date-pickers/getting-started/)
+- [Data Grid](https://mui.com/x/react-data-grid/)
+- [Date and Time Pickers](https://mui.com/x/react-date-pickers/getting-started/)
 
-## How do we decide if a feature is MIT or commercial?
+## Installation
 
-We have been building MIT React components since 2014,
-and have learned much about the strengths and weaknesses of the MIT license model.
-The health of this model is improving every day.
-As the community grows, it increases the probability that developers contribute improvements to the project.
-You can find our pledge to nurture the MIT licensed content on [this Stewardship page](https://mui-org.notion.site/Stewardship-542a2226043d4f4a96dfb429d16cf5bd).
+### Data Grid
 
-However, we believe that we have reached the sustainability limits of what the model can support for advancing our mission forward.
-We have seen too many MIT licensed components moving slowly or getting abandoned.
-The community isn't contributing improvements as fast as the problems deserved to be solved.
+Read the Data Grid [Installation instructions](https://mui.com/x/react-data-grid/getting-started/#installation) in the MUI X docs.
 
-We are using a commercial license to forward the development of the most advanced features, where the MIT model can't sustain it.
-A feature should only be commercial if it has no great MIT alternatives.
+### Date and Time Pickers
 
-Find more details [in the docs](https://mui.com/x/introduction/licensing/).
+Read the Date and Time Pickers [Installation instructions](https://mui.com/x/react-date-pickers/getting-started/#setup) in the MUI X docs.
 
-- [DataGrid](https://mui.com/components/data-grid/), published under `@mui/x-data-grid`, MIT licensed.
-- [DataGridPro](https://mui.com/components/data-grid/#commercial-version), published under `@mui/x-data-grid-pro`, commercially licensed.
-- [DataGridPremium](https://mui.com/components/data-grid/#commercial-version), published under `@mui/x-data-grid-premium`, commercially licensed.
+## MIT vs. commercial licenses
 
-## Questions
+MUI has been building MIT-licensed React components since 2014, and we are committed to the continued advancement of the open-source libraries.
+Anything we release under an MIT license will remain MIT-licensed forever.
+You can learn more about our stewardship ethos in [this document from our company handbook](https://mui-org.notion.site/Stewardship-542a2226043d4f4a96dfb429d16cf5bd).
 
-For _how-to_ questions and other non-issues,
-please use [Stack Overflow](https://stackoverflow.com/questions/tagged/mui) instead of GitHub issues.
-There is a Stack Overflow tag called "mui" that you can use to tag your questions.
+We offer commercial licenses to developers who need the most advanced features that cannot be easily maintained by the open-source community.
+Commercial licenses enable us to support a full-time staff of engineers, which is simply not possible through the MIT model.
 
-## Bugs or feature request
+Rest assured that when we release features commercially, it's only because we believe that you will not find a better MIT-licensed alternative anywhere else.
 
-You can create an [issue](https://github.com/mui/mui-x/issues) on this repository.
-Please always provide a reproduction case, the following templates can be a good start:
+See the [Pricing](https://mui.com/pricing/) page for a detailed feature comparison.
+
+## Plans
+
+### Community Plan
+
+The free version of MUI X is [published under an MIT license](https://tldrlegal.com/license/mit-license) and is [free forever](https://mui-org.notion.site/Stewardship-542a2226043d4f4a96dfb429d16cf5bd#20f609acab4441cf9346614119fbbac1).
+This version contains features that we believe are maintainable by contributions from the open-source community.
+
+MIT licensed packages:
+
+- [`@mui/x-data-grid`](https://www.npmjs.com/package/@mui/x-data-grid)
+- [`@mui/x-date-pickers`](https://www.npmjs.com/package/@mui/x-date-pickers)
+
+### Pro Plan
+
+The Pro version of MUI X expands on the features of the free version with more advanced capabilities such as multi-filtering, multi-sorting, column resizing and column pinning for the data grid; as well as the date range picker component.
+
+The Pro version is available under a commercial license—visit [the Pricing page](https://mui.com/pricing/) for details.
+
+Pro packages:
+
+- [`@mui/x-data-grid-pro`](https://www.npmjs.com/package/@mui/x-data-grid-pro)
+- [`@mui/x-date-pickers-pro`](https://www.npmjs.com/package/@mui/x-date-pickers-pro)
+
+### Premium Plan
 
-- [DataGrid community version](https://codesandbox.io/s/datagrid-v5-quick-start-54iz1)
-- [DataGridPro commercial version](https://codesandbox.io/s/datagridpro-v5-quick-start-5pjhc)
-- [DataGridPremium commercial version](https://codesandbox.io/s/datagridpremium-v5-quick-start-h2ztp2)
+The Premium version of MUI X covers the most advanced features of the data grid, such as row grouping, Excel export, and aggregation, in addition to everything that's included in the Pro Plan.
+
+The Premium version is available under a commercial license—visit [the Pricing page](https://mui.com/pricing/) for details.
+
+Premium package:
+
+- [`@mui/x-data-grid-premium`](https://www.npmjs.com/package/@mui/x-data-grid-premium)
+
+## Questions and feedback
+
+### GitHub
+
+We use GitHub issues as a bug and feature request tracker.
+If you think you've found a bug, or you have a new feature idea, please start by [making sure it hasn't already been reported or fixed](https://github.com/mui/mui-x/issues?utf8=%E2%9C%93&q=is%3Aopen+is%3Aclosed).
+You can search through existing issues and pull requests to see if someone has reported one similar to yours.
+
+[Open an issue](https://github.com/mui/mui-x/issues/new/choose) in the MUI X repo.
+
+### Stack Overflow
+
+Visit Stack Overflow to ask questions and read crowdsourced answers from expert developers in the MUI community, as well as MUI maintainers.
+
+[Post a question about MUI X](https://stackoverflow.com/questions/tagged/mui) on Stack Overflow using the "mui" tag.
+
+### Bugs and feature requests
+
+You can create an [issue](https://github.com/mui/mui-x/issues) on this repository.
+Please always provide a reproduction case.
+As a starting point, we recommend you [browse the documentation](https://mui.com/x/introduction/), and [select](https://mui.com/static/docs/forking-an-example.png) the closest example to your use case.
+Or you can use a [basic template](https://mui.com/r/x-issue-template) to build your reproduction case.
 
 ## Contributing
 
-Read the [contributing guide](/CONTRIBUTING.md) to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to MUI X.
+Read the [contributing guide](/CONTRIBUTING.md) to learn about our development process, how to propose bug fixes and improvements, and how to build and test your changes.
 
-Notice that contributions go far beyond pull requests and commits.
-Although we love giving you the opportunity to put your stamp on MUI, we also are thrilled to receive a variety of [other contributions](https://mui.com/getting-started/faq/#material-ui-is-awesome-how-can-i-support-the-project).
+Contributing to MUI X is about more than just issues and pull requests!
+There are many other ways to [support MUI](https://mui.com/material-ui/getting-started/faq/#mui-is-awesome-how-can-i-support-the-project) beyond contributing to the code base.
 
 ## Changelog
 
-If you have recently updated, please read the [changelog](https://github.com/mui/mui-x/releases) for details of what has changed.
+The [changelog](https://github.com/mui/mui-x/releases) is regularly updated to reflect what's changed in each new release.
 
 ## Roadmap
 
-The future plans and high priority features and enhancements can be found in the [roadmap](https://mui.com/discover-more/roadmap/) file.
+Future plans and high-priority features and enhancements can be found in our [roadmap](https://mui.com/x/introduction/roadmap/).