Mandatory where? Most of the devices people are streaming video to these days aren't even PCs!
Macs haven't had TPMs for a while now (I think Apple never really used it and dropped it even before the Apple Silicon switch), but of course they have their proprietary equivalent.
Yes, but Windows isn't where the vast majority of people watch Netflix, so I don't see the incentive for media DRMs suddenly also making TPMs mandatory.
