I live in Brighton, 15 minutes north of Ann Arbor, where I work. No, we do not consider ourselves to be "just part of the same community". Detroit's "over there". Detroit does extend out past Detroit proper and there are municipalities where one might just say for convenience "I live in Detroit" to those from out-of-town even though the mailing address isn't Detroit, but there's a lot of not-Detroit less than an hour away. And as Detroit tanks, there's a lot more not-Detroit to be found.

While Detroit has been trying to resurrect itself, to take just one for-instance, Ann Arbor has just gotten on with life, and slowly but surely the rest of the region is following. Even if Detroit becomes alive again it will be a while before it culturally dominates the area again, if it ever does.

In terms of the sorts of things that might be of interest to Hacker News, there's not much point to resurrecting Detroit and to be honest I don't understand the HN obsession with Detroit. Just drive an hour west. What people don't seem to get is that it really is Detroit that is dead/dying; the Greater Metropolitan Not-Really-Detroit-Anymore area is getting on with it. I will not say thriving, because that isn't true, but only Detroit and the aforementioned absorbed municipalities are dying.