I have a Nissan leaf. When I talk to people about it, it amazes me how many people think anyone can use the Tesla network. Noone other than Tesla cars can!
And Teslas can use non-Tesla charging networks. Tesla should standardize on CCS plugs where it makes sense to (like they've done in Europe) and open their chargers up to other EVs.
Tesla was recently denied a government subsidy in New York because they're not offering CCS charging, which is fair enough. If they're not going to make it available to all EVs then the utility of the infrastructure is limited and they shouldn't get any discounts funded with public money:
