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.
Maybe I’m biased living in a “European” part of the US, but it can translate very well to our country. It’s not that the place is large, but so many places are suburban or trying to keep that rural feel, yet you want massive warehouse stores for everyday shopping. But every town can have a center where common areas are common. Every town can have a center with whatever shops and restaurants. Every town of every size can have some things in a higher density area that’s walkable. In our mythology, we call it “Main Street, USA” and look back at it as a long gone ideal, but it’s still a useful concept, still around in some places, and can be re-created