[ghaff]

I assume the point is that salaries aren't about fairness. So the objective measurable reason is that if you want to hire employees in high CoL areas, you'll need to pay more to be competitive.

To be clear, I have no issues with divorcing salary from location for a remote company. But it probably means you're paying generous salaries for people living in cheap locations and you'll have trouble hiring anyone who must must must live in SF for... reasons.