You can use all non-tesla fast-charging stations, charging to 80% in 20 minutes. Do note that tesla supercharger stations also have "normal" fast-charging stations. Tesla is the only company remaining to deploy vendor-specific chargers.
Assuming that a charger network was necessary for success, which I would argue it was, waiting for the others to catch up could have killed the company.
Note that there have still been no large-scale deployments of charging standards with more than 50-60kW of power, which is half what Tesla is currently deploying to most of its charging stations in North America.
Have you seen Tesla's charging connector? It's way superior to the bulky standardized connectors. And as said by others, there really is no other game in town right now for long distance travel in an EV.
Disclosure: I own a Tesla Model S.