Honestly, it is the tech mecca of the world, so what would one expect? If you move elsewhere, like Portland, and if you hope the tech community continues to grow there - then eventually wouldn't you be hearing about series A rounds in the coffee shops there as well?
And about home ownership being the "American Dream"....the jury is still out on that one. It seems more like the "American Debt". Unless you have a family with children, and want a place for them to grow in to with good school systems and all, there's really no need to jump in to home ownership. The first several years you are mostly paying interest, so you're not building equity. Not too much mention all the money you've put down already. So unless you plan on living there for the long haul, just rent. Having a reasonably priced roof over your head should be part of the American Dream, not necessarily home ownership.