One thing that is repeatedly underdiscussed about open source is that every time you have a major open source project become successful, be that anything from Linux to Apache Spark, you have private companies who come in, build something that can very reasonably still be called Linux or Apache Spark, but underneath has tons and tons of extra stuff that they never feed back into the open source community.

Hell, I think with the later (since all major cloud providers deploy their own version of spark on their respective data processing cluster services), people don't even know that they aren't in fact using open source software. Hell, eventually you get to a point where companies that choose not to use these third party services eventually just open source their own improvements or abstractions as again separate open source projects that never make it into the upstream project (which are often times heavily influenced by profit making entities).

This has been the model for a very long time, going back to at least the likes of redhat. And certainly will be going forward with countless future projects. Maybe there needs to be new models of open source governance, but I have no clue how successful such a thing would even be.