But there is another downside of pay cuts for remote workers: A remote worker does not have access to the same market as someone living in a hot cluster like The Valley.
A real-world example from Europe: If I take my Berlin salary and live just 50km out of the city, I am easily one of the top-earners in that area. Naturally, I lose easy access to many offerings of that city, but that's part of the deal, I think. Now if I ever wish to switch employers, I can look in Berlin, but I am at a disadvantage if many companies insist on on-site work. If they don't, I compete on a much larger market with many more would-be employees. This problem should be reflected in payment, I think.
So from my, completely egocentric, perspective it would be ideal if companies demand on-site one or two days a week, so I can choose the best spot for living in a larger area, but still only compete in a limited market.