Supporting remote work can come at a cost to an employer so it does make some sense to me to offer less money in those cases and inversely, more money if you move to their town to work there. Other than that equal pay is more fair indeed. I think things have mostly gotten crazy along with some housing markets. Perhaps this will slowly disperse the extreme concentrations of wealth throughout countries with employers opening up more offices at cheaper locations. Or they will have to prove that those extreme concentrations result in equally large productivity/quality improvements.