The issue is the ability to fast charge when you travel so you don't also need to own an ICE if you want to go on road trips. This is a huge advantage for Tesla over all other EV makers -- and paying for supercharging does nothing to change that. If anything, it will keep them more open for travellers.
Having travelled before there was one supercharger in Canada, and relying on public chargers, I can tell you I will never look at another EV maker until they also have banks of maintained fast chargers all over the place like Tesla. Given that no other automaker has even pulled one permit, that's probably many years off.