Really? I've seen the opposite. The downtowns of places like Indianpolis, Cleveland, Columbus, Pittsburgh, Charlotte, Atlanta, Nashville, etc. were underinvested wastelands not too long ago. Now a lot of young people want to live in these places. Not to mention the hipster paradises of Portland, Austin, etc.

SF, Seattle, NYC, DC, Boston, etc., are still the major magnets, but "hip" urban living isn't as confined to the coasts as it used to be IMO.