Because those Rust Belt cities don't have anywhere near what the coastal cities have, namely a plethora of tech jobs or a startup scene that produces highly successful companies, or a VC network that will just throw money at you.
Get YCombinator to open a branch in Toledo, and you might see that start to change. But currently, most people aren't rushing to go back to the Rust Belt because, while they might get one job, if they get fired/laid off/the company goes under/the management is abusive, there isn't much in the way of alternatives.
Get YCombinator to open a branch in Toledo, and you might see that start to change. But currently, most people aren't rushing to go back to the Rust Belt because, while they might get one job, if they get fired/laid off/the company goes under/the management is abusive, there isn't much in the way of alternatives.