Seems to me there is already a glut of commercial buildings, especially retail spaces. Big malls are only half full (if that) and there are some commercial strip-mall type developments that were put up in the boom years of 2007 - 2009 that are still sitting vacant a decade later (I'm thinking River Pointe in Sheridan, for example.)
Seems to me there is an opportunity there, though. If we have too much retail space + not enough living space, how long before someone figures out how to turn the former into the latter?