There are two options I see that we can implement to make living in SF attainable for the common person:
1. Demolish all residential buildings fewer than 100 stories tall and replace them with 100 story buildings. SF is nowhere to be seen on the list of the world's most densely populated cities. That has to change.
2. Immediately began reclaiming land from the Pacific Ocean, until every man, woman and child who wants to live within the SF city limits is able to do so for the same price it would cost to rent an equivalent space in Topeka. I'm sure Tokyo and Honolulu won't like becoming SF suburbs, but you have to break eggs to make an omelette.