How so? It becomes less valuable the more people who use it. And it doesn't work like a platform. That would be like Apple trying to build every possible app themselves.
You have the option to choose any of the other EV makers, but this one EV maker has very fast charging stations worldwide in strategic locations, with lounges and predictable charging rates.
Of the 3 EVs that I drive, only the Tesla I would take outside the city. Even if the others had a much bigger range (they don't) I would not be comfortable outside of the Tesla supercharging network because I've encountered many difficulties with ChargePoint, evGO, etc: stations not working, backed up, slow charging, high cost, etc.
The ecosystem is its charging network because it's very reliable and eliminates range anxiety.
Government just passed $7.5 billion for charging network. There's probably more to come. SUperchargers are definitely an advantage, but how long until electric charging stations are everywhere?