Selling the supercharger network to a separate company, and enabling it to serve all EVs, seems like an obviously great idea. Rebrand it from "Tesla Supercharger" to “Supercharger". Tesla cars can stiull be sold as compatible with “the Supercharger network”.

I'm not a financial modeling kind of person, but I suspect such a beast could sell for quite a lot of money, strengthening Tesla's finances. Perhaps one of the gigantic oil companies that owns/franchises a gigantic chain of gas stations would like to stake out a leading claim on EV charging, those folks have plenty of money.

It would also further Tesla's stated goal of accelerating the transition to EV's or whatever.

Of course there are downsides, giving up this proprietary advantage. Still, that downside versus retiring some risk seems like a nice trade-off.