Wait, why is requiring Windows not outlandish? It's not like other platforms or browsers don't have DRM support. Even on Firefox on Linux, there's a setting to enable DRM-required media.
I don't know what is actually required. I'm asking.
It is a little different from publisher to publisher. Basically a main-stream OS, plus hardware attestation of any displays, plus an official browser version with the right codecs will get you there with no issues. If you are missing any of those pieces, you get downgraded on quality for sure.
No you don't really, google around and you'll see that whatever you use, unless it's a google stick (not even sure either), you won't get HD. Seems the DRM for displays has been cracked a while back and everyone has just downgraded playback silently ever since.
With zero notifications, refunds or anything of course.
A browser won't even work at all, as you need dedicated software (i.e. native app, TPM/TEE support) in order to play 4K media at full resolution, at least in Netflix's case.
There isn’t a native app for Mac’s, and I’m pretty sure you can watch 4K there.