I'm not sure what you mean by that. A gas station owner is certainly free to onyl service certain brands and control access in any way that they choose. Custome

I'm not sure what you mean by that. A gas station owner is certainly free to onyl service certain brands and control access in any way that they choose. Customers would simply be free to take their business elsewhere. In practice, station owners would rarely (if ever) choose such an option. Similarly, these NACS equipped vehicles can use any open NACS station, or any open CCS station via an adapter. There is nothing in the standard that limits charge station providers to only Tesla. Any charge station (whether CCS or NACS) could implement restrictions in any way that they see fit. The most common cases of this are CCS stations at dealers, where they often restrict it to their company's vehicles. It is unlikely that a public charge company would want to cut themselves off from revenue by severely limiting who could use their site.