@Lojcs Microsoft does exactly that. They licence a number of proprietary codecs for inclusion in Windows for the convenience of users.
Running under Wine, some alternative decoders can be used, but many proprietary codecs don’t have freely-available decoders available. Under Proton, many free decoders can be used like Wine, but some prohibit commercial use or otherwise can’t be implemented in Proton via Valve. GE-Proton manages the best of both worlds.
@refalo @yogthos China has a single CPU manufacturer with an x86 licence, Zhaoxin. Their offerings don’t rival AMD or Intel upper end, but they’ve been around for ages and are widely used in China.