It wasn't that long ago that big tech controlled most software....as entirely closed-source. And that's still largely the case: the source for Google's search algorithms, Facebook's core platform, etc.

While it's good to be mindful that some projects are "controlled" by large tech companies, it's a huge improvement over the way it used to be. I'd rather see FB open-source React, Google open-source TensorFlow, etc. than keep it all proprietary.