Occam's razor strikes again or in the latimes case Occam's butter knife.
if you read the article it's comparing the 10 county area of the bay vs. the 5 county area of la
All 10 counties have seen a housing squeeze. My point is the article doesn't distinguish between existing poor residents getting richer vs poor residents being displaced by new, richer immigrants. Both would produce an increase in average GDP but through different means.