> That is, people don't starve because there's not enough food, they aren't homeless because there are not enough houses and apartments, they are not left untreated for medical conditions for lack of doctors and nurses etc.

People don't actually starve today, because food scarcity is now a problem humanity has almost-entirely solved (the exceptions are war-torn parts of sub-Saharan Africa, not anywhere in a developed country). But there are many people who are homeless who would be if housing costs were somewhat cheaper because the housing supply was bigger; and there are many people who don't get enough medical attention because the time of doctors and nurses is scarce and therefore expensive - this is why there's so much interest in using AI for medical questions and examinations.