The cyclical nature would be overcome in the relevant areas if, as stated elsewhere in this thread, this exodus from the Bay Area is a slow and steady trickle.

That trend is so powerful precisely because lots of trade-working parents don't want their kids to suffer the kinds of medical bills, chronic pains (with potential resulting opioid addictions) and stunted healthspans, that they do.

Granted, construction is rather especially bad among the trades in this manner: things like welding are not quite as physically-demanding.