Oh only
Every Arri camera,
RED Cameras
Sony cameras with the right board.
BlackMagic
Canon C700
And all these hundreds of products.
Learn about Apple ProRes and ProRes RAW authorized products.
support.apple.com
And quite a few more if you want to pay - Nikon Z6/7
Perceptually Prores 4444 is very little different to RAW footage and you don't need a to have a Professional DIT on set. you can capture on standard kit.
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Why? It's standard and allow MORE lanes and slots on the whole system. What would you be doing that would ever max out EVERY PCIE Slot in one go. EVEN 2x DUAL Vega 2s going at full pelt wouldn't max that out.
Also blame Intel and AMD for not going as fast as your untenable expectations. Maybe you want Infinite bandwidth?