I would recommend you look into the history of Silicon Valley. As I understand it (and I don't know much about it), it was a lovely, inexpensive place, a very prestigious college decided to do some stuff to help develop local businesses and then some folks who really loved the place went there to start their business(es) because in part because it was so lovely. Do a bit more research and see if you can find a "formula". I'm sure that luck/happenstance plays a role but that doesn't mean you can't get clues for how to encourage something similar to sprout elsewhere.