You don’t even have to go that far. This clause says the license trumps the clause, and most permissive licenses permit relicensing. So relicense without this clause. Problem solved.
It’s certainly not the intent, but I believe it’s what it actually says. Of course, IANAL and you’re an idiot if you take this ad legal advice, etc.
As for selling the software, there are creative ways of not distributing software technically, yet assemble proprietary and open-source bits at a customer's site such as using Docker with its layered images.
So while the intention might have merit, we have to wait if it holds up in court. My guess is it won't.
Edit: IANAL