The talent pool? I was hiring in LA and the pool was an inch deep and a mile wide. Lots of shifting through the bad to get to the good, and then good luck competing with google, Netflix, and to some degree Snapchat.
Disagree, many more companies are comfortable with remote, and a LOT more employees are happy to work outside of the coast these days. The traditional tech hubs in the US are oversaturated and cannot deliver cost of living value anymore.