not just for the obvious capitalist evil reasons but also just because how much of it doesn't fucking work at all. no matter how much RAM my phone has it still can't juggle Pokemon Go and music/a podcast. my google shopping list just stopped updating itself for absolutely no reason. random shit just constantly goes wrong and there's absolutely nothing the end user can do besides hope a fix is pushed out that doesn't break anything else
I have an app on my phone I use for all of my prose writing. I paid $15 for Night Mode + the ability to upload to Dropbox easily, which is nice for sharing, and I found out a few months ago that they apparently updated the app so that it now costs $15/month to upload to Dropbox.
But guess who was annoyed by automatic updates and turned them off years ago? ;)