What this article doesn't mention is that while in some cities like SF, where rents are astronomically high, there's a huge influx of tech workers whose compens

What this article doesn't mention is that while in some cities like SF, where rents are astronomically high, there's a huge influx of tech workers whose compensations are also relatively high. That coupled with not wanting to deal with traffic as well as younger generation of workers attracted to the city scene results in more and more people crowding into the city. The increase in development of high rise residential is also supportive of the urban revival (cultural, generational, financial) and demand in SF.