The poor are another separate issue. They need to be close to jobs or at least have a way to get to jobs easily. When I was poor, I didn't care to live in a cachet neighborhood, I just needed to be able to get to my job with reasonable public transit and I wanted to feel the area was safe. Of course, given the alternative, I'd want to rent a bungalow next to the beach for cheap, but it's not a necessity and it's not a necessity to live next to one's job.
That said, I would love to see more mixed use zoning.
Gross. I get that some people get to places in their lives where they don't want to deal with diversity, but I don't want cities to turn into places like that. Retirees (those who do want to stay, and don't want to live in a retirement community) are a part of that diversity. Shipping anyone off involuntarily (or even semi-involuntarily, in the case of ridiculous housing cost swings) is completely unacceptable to me.
And I don't think homogeneity is gross. Do you think Nigerians feel gross, or do you think the Japanese feel gross? It's neither better nor worse then heterogeneity.
I would hope the city would offer to partner with a shrinking small town to help relocate people who can no longer afford to live in the city to a town that is suffering from a high rental vacancy rate. A pensioner will only continue to be squeezed by living in a high-demand city as even rent-controlled units are allowed to raise their rents.
And these 2 are related ... how ?
California is broke, which is what causes those underfunding issues. Why ? Nobody is blaming rent control. It's there, but it's so small it registers on very few radars.
Rightist view: http://www.businessinsider.com.au/reasons-to-leave-californi... (TLDR: unemployment (due to various high taxes, rightist site indeed), debt (pension/unemployment liabilities), poverty)
Leftist view: http://www.huffingtonpost.com/bob-samuels/why-california-is-... (TLDR: tax exemptions for large corporations, including the claim they wouldn't leave for high tax because of good schools)
Re: the financial situation, California only recently paid off debts left over from the wake of Enron criminal fraud days.[1]
Obviously the underfunded retirement funds are huge looming unknowns, but they are partially (if not mostly) caused by local governments (such as the city of Stockton) underfunding during the bull market years and being unable to pay during the bear market years.
[1] https://en.wikipedia.org/wiki/California_electricity_crisis