@reay @tk I think you're behind on the developments here

Tesla made a really good charging standard because the existing ones were years behind the needs of Tesla's car production timeline (too low powered)

SAE released CCS2 and it's bad for many reasons: still behind the specs of Tesla's, connector is huge and obnoxious, the cables are too large and become especially difficult to use in the winter because they get so stiff

Everyone besides Tesla was onboard with CCS2, and then they realised all the public chargers sucked, the customers hate it, and Tesla's charging system dwarfs everything else.

Now they've all capitulated and decided to use Tesla's standard which is now open and known as NACS, and SAE is officially designating it as J3400 now.

So it has become a real open standard.