Apple is considered golden because it's hard to tamper with the video pipeline. Windows isn't perfect but you can take steps. But overall 90% of premium content is not viewed on computers, it's TVs and STBs.

If it wasn't going to get blocked by some prominent factions on principle, I think you could build some trusted web technologies that allowed secure video delivery pipelines. But there's too much of a position that nothing like that should exist from some quarters that it'll never happen.