Yes, corporations buy up small businesses and startups. In this case all they got seems to be the Android name and an idea to make a phone OS? AFAICT the project was neither open source or based on the Linux kernel until Google took over.

I'm not trying to whitewash Google here, they did that pretty well themselves in open sourcing Android development. That's given them a 20+ years alibi to be complete arseholes in pretty much any other part of their business — and now they're clamping down on Android, too.