Alfresco does this as well, and they removed things that worked in the community edition, like clustering, requiring people either switch to the EE version or implement the missing/removed features themselves as a plugin or fork.

TypeSafe/LightBend removed a fully functional MS SQL implementation from Slick.

I've written about this type of split in OSS software and what it means for developers:

https://penguindreams.org/blog/the-philosophy-of-open-source...