Tesla already announced they were going to make their us charging network support the us ccs standard for charging. In Europe they have been rolling it out to all cars (that all use the same standard plug) for a few years. Tesla chargers in Europe that are already working for competitor cars are not ruinously expensive. The reason tesla got so much market share was their competitors are very threatened by the transition to a completely new drive train, making their billions of dollars in investments in design of ICE engines, but also the entirety of mufflers, alternators, emissions controls, spark plugs just worthless scrap over time. Of course they all wanted to keep doing something like an ice engine, Toyota wanted hydrogen, etc.
The main advantage Tesla currently has is the size of the network as well as the seamless integration into their navigation system and automatic payment without a custom card. However this could be easily done by competitors if they would grasp the importance of it.
Cars on the other hand are heavily regulated.
It's hard to force the consumer to not use their product. Conversely, it's hard to force the operator of a fast charger networks to do something. We can see other BEV manufacturer following Tesla's method (e.g. Rivian) setting up their own charger network. It's not a desirable future for such important market like transportation.
The infrastructure needed to support battery electric vehicles seem to be expensive/complex to run sufficiently well in practice. In the US Tesla's supercharger network is often cited as a moat against other manufacturers. It's not even building the chargers - it's maintenance and compatibility. Charger network are a losing operation, but they are critical for adoption. Tesla affords this via huge margins, but that won't work for the rest of the market outside of the luxury segment.
Could it be that the BEV market (in the US at least) lends itself to monopolization? If so, hydrogen can make sense as a technology that does not rely on losing charger network to operate (just like no car manufacturer needs to subsidize fuel stations).