https://www.cnet.com/roadshow/news/tesla-elon-musk-open-supe...
https://www.gearbrain.com/tesla-supercharger-accessible-othe...
He's even fine with them using adapters for Tesla's plug, they just have to pay "their fair share" to use the Tesla superchargers. Of course the devil's in the details who knows what a licensing agreement like this would cost.