There is a lot of old money in PB. The market changes won’t affect many people, short of the recent handful of condo conversions and the like.
One won’t see distress sales there like there is in 4$, CV, SEH, etc. The area is obviously very popular with the college student demographic, so it is attractive for investment rentals. There are very few family types in the area for obvious reasons.
No matter what happens with the bars, beach drunks, and bums, it still is oceanfront and a historic part of SD.