I think a better question is - why does everyone have to live in LA? One answer is that America lost jobs that used to be done in the rest of the country and co

I think a better question is - why does everyone have to live in LA? One answer is that America lost jobs that used to be done in the rest of the country and concentrated cities are the only places conducive to few remaining jobs like tech and finance. This can be tackled by making competition with the rest of the world more fair - if we have certain labor laws or environmental regulations, we can require goods produced abroad to comply with similar laws or face tariffs to compensate American businesses for extra overhead. At the same time, we can make tech/finance more accessible everywhere in the country through remote work and skill training. But America as a whole is NOT overpopulated, there are plenty of places where homes are cheap and that desperately need more people.