In all seriousness though, I'm fairly certain that a repurposed cruise ship turned luxury condo building anchored off the coast with a free, regular speed boat shuttle could be a profitable business given the bonkers prices in SF proper.
Some cities actually do stuff like that. You can can anchor large, cheap boats in Paris on the Seine (you pay a rent for that of course,but its much cheaper - closer to a parking spot).
Then these boats are made into single apartments. They're larger than most apartments in fact. There is electricity and water included, the only thing you need to get wirelessly is internet (which is rather easy).