It will be very interesting to see just how big the pool of people who can pass the interviews[0] but weren't willing to relocate is.
The demographics (and housing prices!) in the tech hubs reflect a big influx of highly-paid developers. If only 10% of the folks who could pass those interviews and get those offers were willing to relocation, that'll cause a much larger downward pressure on prices than if, say, 75% were, in which case the pool doesn't expand as much.
[0] the usefulness of the algorithm interview can be debated, but I don't see remote work putting any pressure on this process