You make this sound like a problem when it actually seems to be a solution. Perhaps the skill sets in LA are more demanding than those in the lesser populated (i.e., agricultural) regions of the state. Seems to me moving out of LA is a viable solution.
This is a consequence of foreign cash buyers, many of them coming from China. We have had a decade long influx of foreign buyers in SoCal who have driven prices above what California natives can afford even on two salaries. In my area 40 yr old tract houses are getting $450/sq ft.
This prices out new buyers, at least the ones born here. And these high prices get passed along to renters. Some are grandfathered in with landlords who aren’t marking rents to market. But if a place sells those renters are out of luck and they will never find places renting for close to what they had been paying. Very hard on the elderly who have been renting for decades.
Another huge problem is all the housing being occupied by illegal aliens. The ones who don’t plan to stay here are willing to live 20 to a house and that allows them to pay very high rents while turning the neighborhoods into dumps.