Meh, land is an asset, and they aren't making any more of it. A reasonable person would expect use cost to increase over time, especially in high-population centers like SF and NYC where the game is basically "is someone else as qualified as you willing to pay me more?" -- which is, incidentally, the same game we play with our salaries.

That's why fixed-rate mortgages are so great. Your housing payment is guaranteed not to rise! (taxes notwithstanding)