The short version is, what do you know, if you make it easy for smart people to start new companies for their big ideas, they’ll do it. And if you don’t? You don’t become a tech hub, no matter what else you’re doing.
I was once advised to take a vacation to California every year and do all my thinking then. But I hate wasting fuel, and it'd be so much more fun to say "this little park in the middle of Detroit is actually California soil", and just walk down there every few weeks with my notepad, and ponder what problems need solving and how.
Something something the idea must have come from something they saw at work, obviously.