Technology doesn't seem to be (in terms of what people can cheaply get hold of) there yet though? Amd as soon as it does get there, you'd arbitrage to third world guys not Western guys who want to live in Thaliand.
We're in a situation where we have offshore (Indian) tech hires and it's hard to coordinate on technical matters, even in a company where we have unlimited access to fancy VC rooms. When we flew them over for a bit everything was far easier. My boss thinks expensive digital whiteboards would make a big difference, but actually more than the money there's a political/social cost to buying big, visible things to sit in public sight in an office.
So why would you hire a Western guy for 3x the price and pay the exact same communication cost? Western and sitting in the same building or 3rd world country no other option seems to make sense.