Can't even get 4K on most streaming services on macOS now... It's not just Linux anymore.

Netflix lets you in Safari[1]; Disney+ limits you to 1080p[2]; and Hulu limits you to 720p[3].

[1]: https://help.netflix.com/en/node/55764 ("Mac computer with an Apple processor or Apple T2 Security chip").

[2]: https://help.disneyplus.com/article/disneyplus-video-quality ("Please note 4K streaming is not available on computer browsers").

[3]: https://help.hulu.com/article/hulu-video-quality ("Hulu.com streams in quality up to 720p").

Even the 4K you get can hardly be considered 4K, awful bitrate.

Too bad most people are okay with this so it's never gonna change.