Fortunately, there's an easy workaround for the ever-increasing land rents, which should work even in places like the SF Bay Area: you can just have a group of people pool their resources to pay for a given plot of land, usually in the form of an "apartment building". Unfortunately, those are illegal in almost all of the Bay Area, and in SF itself, even in the few places where you can build a new one, the process takes forever and costs a lot of money. As a result, housing becomes a rare and collectible good, and people have to either crowd into the existing units, pay a lot of money, or have punishingly long commutes.