The future is one where everyone can, theoretically, install anything they want, but they get banned from everything should they actually do so. Rooted system? Attestation fails. "Oh no, looks like someone tampered with the system". Can't access your bank account. Can't communicate via WhatsApp. Can't watch something on the streaming services. Can't even play video games.
Discrimination against "untrustworthy" devices, where "untrustworthy" means not corporate owned. Leading to complete ostracization.