This is called "trickle-down poverty" and is a result of the 0bama Depression. Forward comrades, to a future of mutually-assured poverty!

Yes, this is an expensive area. Other than than rapidly increasing density, this is pretty much paradise! Who wouldn't want to live here? There's huge demand, but limited supply, so by 'law' prices will rise. But as long as we continue to subsidize poverty, there will be an endless supply of impoverished bobbing along the bottom. The less inconvenient homelessness becomes, the larger the ranks of the homeless will grow.
And reading carefully: Don't try to slip construction workers, teachers and policeman into the low income category.
Lastly: "Will your children be able to live in this wonderful city?"
...pretending for a moment that Mtn View is still a "wonderful" city, yes our children will be able to afford living here. Under two conditions: WE personally invested in this "wonderful" city by becoming homeowners, and no greedy tax mongers repeal prop 13.