I guess this is the last Google phone I ever buy then. I don't even sideload many apps, I just think it's immoral. To be fair to Google, it did erase "don't be evil" from its motto.
Android cannot afford being a walled garden like Apple and I don't see them limiting installations. As long as they get users into putting data into Google services, they'll let both OEMs and users customize anything in the platform.