They have been moving things to apps so they can substitute piecemeal the open source OS with their close sources: https://arstechnica.com/gadgets/2018/07/googles-iron-grip-on-android-controlling-open-source-by-any-means-necessary/

That article is 12 years old. It has only gotten worse.

Well taken care citizens are more productive (yet can revolt better) https://m.youtube.com/watch?v=rStL7niR7gs