I feel like if you were to build a skyscraper full of condos and apartments in downtown SF, you could get massive rents from it. Especially if you were the only

I feel like if you were to build a skyscraper full of condos and apartments in downtown SF, you could get massive rents from it. Especially if you were the only one doing it. The only problem would be if everyone was doing it. I guess nobody has the money to buy a building in downtown SF, and anybody that owns a building in downtown SF doesn't want to tear it down and lose the cashflow for a whole year or so.