I'm not sure the original proposition was that Valve focus on making that happen: > > I wonder if Apple will budge on their not-invented-here syndrome and allo

I'm not sure the original proposition was that Valve focus on making that happen: > > I wonder if Apple will budge on their not-invented-here syndrome and allow for a real vulkan.kext on upcoming macOS versions > Native Vulkan support could also pave the way for a proper Mac version of DXVK I think the proposition was that if Valve lets it happen, other interested developers might be inclined to improve the situation enough that it's not so much extra work for Valve to add Mac support to Proton. I'm not sure who all would be interested, but I imagine the motivation would be similar to whatever is keeping the MoltenVK developers going. You're right that Apple provides an a hostile and precarious platform compared to Linux, of course.