"Finding potential" and "finding someone to build this thing in a quick and useful way in the immediate future, not the far future" are VERY different things.
I've worked with overseas devs who I'm pretty sure were smarter than me (PhDs, ability to go deep on tons of technologies) yet didn't have the skills needed to quickly turn around a request from a business person and build the right feature.
I think salaries will level out to a certain amount inside the US and other countries - but it's going to be a long time before highly competitive companies wouldn't be shooting themselves in the foot by eliminating themselves from consideration by coastal devs, experience-wise - but cross-country language and communication barriers (especially when timezones are involved) will remain very high.
Companies have already been trying to do that sort of outsourcing for 20 years, and yet US salaries have only gone up in that time frame. Solving "working remotely in the US in a few timezones" is a very different problem than solving the persistent, unsolved-for-decades "hiring programmers in a different country" problem.