Obviously the post-covid world may be completely different, but my personal anecdata is that my income went up when I went fully remote over a decade ago. Instead of the hand full of local large employers competing for my labor, the whole world is competing for it.

It's important to remember that these economic concepts flow both directions. Power dynamics fluctuate over time, but don't let anyone convince you that you're always on the short end of the stick. You're not.