(1) I know what NIMBY is an acronym for, but what specifically has been done to decrease access to housing?
(2) I'm not sure how someone supports themselves "cook[ing] food at home and sell[ing] it to neighbors". Are we talking about lemonade stands, bake sales? I don't know anyone who pays their rent with bake sales, and I live in a low-rent, free-market paradise (Houston). I do know a bunch of people who pay their rent by working at a restaurant, where some regulation is a good idea for obvious health reasons.
(3) I have no idea what Prop 13 is, you'll have to give a brief summary if you want anyone who doesn't follow the California state legislature to understand.
(4) What infrastructure is crumbling? From what I understand, the SF area has entire categories of infrastructure (like public transport) that simply don't exist in a workable form in my free-market paradise.