At which point, the government takes away all charger subsidies from Tesla because the system is no longer open. And then CCS build out continues using government subsidies and eventually exceeds Tesla.

NACS is a standard CCS charger with a different plug on the end. So it’s trivial to switch back and forth, and newer chargers will have both CCS and NACS plugs because of this. Many Tesla owners already use CCS chargers because they are cheaper than the Superchargers.

The more likely scenario is Tesla puts longer cables on their chargers. The entire industry is not going to agree to be hamstrung by Tesla’s arbitrary design design for the next several decades when they can just tell Tesla to change out the cords.