Why do we think cheap rent is such a factor in making a tech city? Innovating and inventing new tech is expensive. Everyone in the chain knows this, Founders, V

Why do we think cheap rent is such a factor in making a tech city? Innovating and inventing new tech is expensive. Everyone in the chain knows this, Founders, VC, tech workers. You pay them well (or in the case of Founders sacrifice alot) but, it's worth it in the end because the gains from that initial work are so large. What makes a great tech city is access to a large pool of highly trained people. SF has this, LA (in theory) has this, Austin, NYC and other places in the US has this. Tech cities also should be places people want to go. Weather is a huge consideration. Detroit is cold. SF and LA are warm. I don't care that my rent is $500/mo if I'm freezing. I'll gladly pay $2,500 for the same place for 75F degree sunny weather year round. Culture is another big aspect. When I'm not working, I want to find interesting things to do, places to visit, food to eat, people to interact with. I think this is why NYC would be a decent startup city despite it's terrible weather. Density has a role to play that we don't fully understand. Austin would be a great example that checks all the boxes (and has a low cost of living to boot) but, hasn't exactly exploded as far as startups are concerned. Miami too as it has actually tropical weather and beaches. Detroit is lacking is so many areas. Density is going to be a problem. Weather is a huge problem; most of the country is warmer and more temperate than Detroit (which is also on the lake so added windchill factor). Detroit is blighted which means unless you are 22 and like warehouse parties or some young hipster and enjoy the early stages of gentrification, Detroit isn't for you. Also, who wants to raise kids in Detroit? Lead in the soil? No thanks, I'd pay the extra money to live someone where my kid's IQ isn't stunted irreversibly. My question is why are people still in Detroit? If you are going to try to make a new startup city, why not try Miami or Orlando or Austin or Dallas or San Diego? Why freeze your ass off, just so you can brag about it later? What is the city council going to do that's so freeing to your ability to write software?