The other problem is things like DRM being increasingly common. Last I checked, many video streaming providers either don't support Linux, or only serve low-quality videos. With Macs you know they'll get support.
Many content rights contracts I see instruct the streaming platforms that they must detect Linux and either give low quality or deny the playback entirely.
It's because, rightly or not, they don't trust Linux in comparison to MacOS and view it as a piracy vector.
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.
