Why not? It's a business relationship; both parties are in it to come out as ahead as possible. Why would a company pay a remote worker $400k/yr in Oklahoma when they can just pick from a country-wide candidate pool who will do the same job for a fraction of that?

Companies are typically very impersonal about money, to a much greater extent than people. I'm sure some highly compensated employees are about to be sad, but this is just business. It's a free market, and it just got a lot bigger.