I don't understand why and how techies are so strongly associated with the hipster culture in public image. I lived in SF and Boston and techy parts of the town are always more hipster-y; but my personal experience in Berkeley and MIT indicates that the people who work in tech industry are not the hipster-y people. What is going on here? Is this an artifact of gentrification or am I missing something? Maybe a sociologist could help me?

My theory is that it's because techies skew young, so they prefer to live in places with lots of other young people, which are usually hipstery places with good food, local cultural events, etc.