It is not when ir comes to wages. People in other continent aren't dumb, the overall wages are just lower.

If you work at FAANG and relocate from NYC/SF to a smaller satellite office within the US, you can take a large pay cut. Unless things have changed in the last few years, companies usually pay location-based market rate. The lines are blurred with remote work - which market are you really a part of? But there is nothing magical that separates within the US from outside.