If the user does something with their device Google dislikes, Google can block the user from using Google services, or if they're doing something illegal, they can go that route.
This habit of retroactively removing functionality from devices is not OK. If Google relies on a business model other people hate, perhaps they should give some thought in to doing something about that.
Most large tech companies want to get a noose around users' necks. If you stick your head in the noose, guess what happens?