> This is exactly why Google is clamping down on running your own choice of apps on Android, as well as pushing things like remote attestation on both phones and browsers.

Yes, Google is doing this; but I don't believe Google is doing it to squeeze an inconsequentially small boost in YT Premium subscriptions from former-account-sharers - I believe they're doing it because they want to demonstrate that YouTube is a "secure" platform for large, Hollywood-like, production studios to feel comfortable publishing first-runs of new TV content directly to YouTube - and those production companies are famously paranoid, luddite, and comically ignorant of cryptography fundamentals (i.e. they believe DRM can simultaneously allow legal subscriber Alice but deny evil pirate Bob from watching protected content when Alice and Bob are in-reality the same person (it's you, me, us!).

..and if not Hollywood studios, then certainly the major sports leagues. [The NFL's lawyers seem like real fun at parties](https://publicknowledge.org/the-nfl-wants-you-to-think-these...).

All they have to do is uptick their DRM scheme a la Netflix and Amazon and YouTube would be indistinguishable from either platform from the eyes of rightsholders, and studios have no problem releasing to either platform.