Electric cars have mindshare now. But unless Tesla can do something Toyota can't for the mass market, another automaker will likely, eventually, eat their lunch. There's no reason Toyota can't bolt on some sexy electronics; the charging network can be accomplished ... somehow, some other way. That doesn't mean Tesla goes away but it means there's a finite market of people willing to pay the premium for a Tesla the same way there's a finite market for people who want the intangibles of (say) a BMW. Unless we presume that Tesla can get their efficiency and margins Toyota-low, which.. again, they can't simply bolt on.
I suppose it's still possibly Tesla can leverage their battery and charging infrastructure to their advantage for long enough to hold off the competition though. Or at least enough to make themselves an acquisition target, but of course, their value needs to be something affordable.
Tesla's charging network is largely a US phenomenon, really. There are 1200 public charging stations in Ireland (owned by the state monopoly electricity distribution company; there are also some independent ones), a small country (many electric cars could cross it without charging) of 5 million people. Of these, 70 are 'fast' chargers (usually 50kW). Tesla charging stations? 2.
Tesla's fast charging stations are a big deal in the US, a very large sparsely-populated country. They are less of a big deal in many European countries, especially where there are robust non-Tesla networks being deployed. Ultimately, I suspect standard fast-chargers will win out over proprietary brand-specific fast chargers.
Toyota is another question entirely.