half the nation can't use home solar anyway
This is nonsense. Of course it can. You simply need to add more panels. Nobody wants to install used panels for money, because the way they profit is by marking up parts prices, and you get a bigger markup at the same percentage on a new panel. But there are absolute piles of used panels out there, I am actually seeing large numbers of them just given away, so this is absolutely a viable business. And that's never been more true than it is now with microinverters, because you can add panels in any numbers you like. One panel, okay. Ten panels, okay. Twenty panels, fine. There's no need for them to match, either.