I like working at startups for a variety of reasons. To pull a number out of my hat, let's say that one in twenty random tech startups would be a good fit for

I like working at startups for a variety of reasons. To pull a number out of my hat, let's say that one in twenty random tech startups would be a good fit for me (based on tech used, experience needed, culture, mission, pay, etc). Say I find a great startup in Helena (where Helena is a stand-in for the many US cities trying to foster a tech scene). It's one of, say, 15 up-and-coming tech startups in the area. I move to Helena and work there. What happens when that startup goes under (which is more than likely for any early-stage startup anywhere)? What happens when it doesn't go under, but I no longer want to work there for whatever reason, since companies necessarily change significantly as they grow? There are 14 other companies in my target size, and odds are none of them are a good fit. But I've moved here, settled in, made friends, etc, and now I have to deal with either the high social and financial cost of moving, or settle for companies I'm a worse fit for. That's the main reason I live in SF and not any of the other cities trying to be the next SF. If my startup goes under, I can pick up a similar job at another in a few weeks without having to change apartments.