If malls continue to shut down and decay over the next twenty years, someone should turn them into retirement communities for GenX and Millennials.
Imagine apartments built into what used to be department stores, (Oh, you're JC Penny 203? I'm at Sears 106). Get those old arcades up and running. Set up meal stations at the food court. Once people actually live there, stores will start to move back in.
If I'm unable to finish my life in my own home, that doesn't sound like a terrible option.
In some places they're already doing it to revitalize the majority of the mall, convert a section and suddenly you've got people around 24/7 that want services.
Yeah, they're trying that around here and failing spectacularly. The recent fascination for new construction in my area seems to be try this "Main Street, USA" shit where they build brutalist flat-roof apartment blocks but with the ground level being retail stores. The rationale seems to be to attempt to build some kind of enclave where people can live, work, and shop without ever having to leave. The only glaring caveats are that the only retail businesses that ever appear here are all shitty franchised fast-casual restaurants where nobody wants to go, with the gaps filled in by the usual parade of payday loan places, cash for gold, crossfit joints that attract no members, and a revolving door of nail salons and wannabe hipster barber shops opening and going out of business.
Notably, none of the retail joints at street level pay enough for anyone working there to afford the astronomical rent for one of the apartments in the same fucking building. These motherfuckers can't even set up a company town correctly...
I know that, but for all the reasons being discussed in detail elsewhere in this thread nobody is actually doing that. What is happening in reality is what I described, and it's bonkers.
The only malls or retail or industrial buildings I have ever actually seen "revitalized" into housing was done by tearing them down entirely and building new buildings on the land. Around me, at least, what's being built is what I described in my previous comment.
I've seen both. Our area has had, for a few years, mixed use zoning as a requirement. So a bunch of projects that clearly only wanted to do housing are doing what you describe: Housing and a meets minimum commercial/office effort. Notably while trumpeting "walkable" which is really code for "we don't waste land on unprofitable parking lots". So you have somewhat dense living and retail where the retail has zero parking, so the only people a business could hope to get are the people in the units immediately close by, which are not a lot, since each project seems to go for low rise housing. So you get three stories of apartments which is more dense than suburbia, but not nearly dense enough to sustain a dedicated retail presence.
But there is this mall they've effectively renovated into a "downtown", adding high rise apartments, and lots of them to the massive retail presence as well as big office buildings. Critically, also expanded to an insane degree the amount of available parking. It was a pretty failing mall (like most) and now it's doing really well, both with high occupancy for their apartments and people going there for the rather nice retail. I think this was the first project and inspired the county to decide everything will be a success if it's just mixed use, and they haven't really come around to realize that they haven't succeeded in forcing the developers to do viable mixed use by the current weak regulations.