You don't have to be a compilers expert. Yes the supply of experts in ML/CV/compilers may be small worldwide. But I believe the current situation is a symptom a

You don't have to be a compilers expert. Yes the supply of experts in ML/CV/compilers may be small worldwide. But I believe the current situation is a symptom as well of negligence on the part of these large tech companies. It's much cheaper to train locally and hire. Microsoft, apple, google et al should join forces to establish a vocational school in the bay area. Make it a 2 year program. I bet you'd get great engineers if Hack reactor, general assembly et al are any indicator.