This doesn't make a lot of sense to me. May be it can take a while with training needed developers and etc. but come on, it's not some insurmountable problem. P

This doesn't make a lot of sense to me. May be it can take a while with training needed developers and etc. but come on, it's not some insurmountable problem. Plus Vulkan is supported for example on Windows without MS even lifting a finger. And about your last point - Apple is really the worst candidate to ask for something to collaborate on.