Exactly. This is about Tesla wanting to control access to the national network and to profit from it. If they simply wanted to do everyone a favor and improve the national infrastructure then they could do that today at little to no cost by opening up their supercharger network to ALL existing EV models. And still make a boatload of money, BTW.This is about access and who pays for it.
With 50-100 new EV models being released in the next two years or so, Tesla will inevitably lose their dominant market share, even as the market continues to increase. If each of those models manages to produce *only* 25,000 vehicles their first year (and many characterize this quantity, produced by Rivian in its first partial year of manufacturing, as a major fail) then that's still several million new non-Tesla EVs being sold every year. Tesla's market share is shrinking. They are doing whatever they can to hold on to their dominance, but IMO they are going about it the wrong way. By opening up their network they could use their head start to stay ahead of the pack. This could be the carrot that Tesla could use to lure new customers. But by trying to control and remain proprietary they are trying to use a stick instead - I personally don't think that is a good long-term strategy.