This is what I don't get about the (former?) SF / Bay Area startup scene. VCs tell startups "keep your cash burn rate as low as possible, to give yourself a lo

This is what I don't get about the (former?) SF / Bay Area startup scene. VCs tell startups "keep your cash burn rate as low as possible, to give yourself a long runway." But then they also want startups to move to SF -- the most expensive city in the country! Don't these 2 things conflict?