But if there is anywhere in the county that has escaped full IT gentrification because of poor commuter access, those prices are going to explode if they haven't already. Since median house price is a huge fraction of CoL calculations (and a frequent complaint among some economists), staying in county gets you a raise, if your friends do it too.
Yeah, last time I looked at rents in my hometown, the cheapest options there were comparable to the cheapest options in San Francisco. They're probably a bit ahead of the curve; most the empty land around is either federal or LADWP, so there's limited room for new development, but it's a major shot up from pre-pandemic prices where renting a full house was cheaper than an SF bedroom.