Long answer: I'm looking at it from a different perspective, why people have to live in SF? The cloud-wages concept is mostly applicable for knowledge workers, I agree, and it's a limitation. Pay-rates should be decided based on objective test results and skills. I strongly object to the "vanishingly thin" part. For setting the average, I think market dynamics will do its job and find a range that is lower than insane SF rates but still super attractive for people who happened to live outside of the US and capable of getting the job done.