Remember that Tesla is still a small company in terms of sales, business units, number of models, certainly only recently are they making a big numbers splash.
And they have a charging infrastructure.
Big Auto has:
- locations to put chargers (dealerships that are often in busy commercial areas close to highways)
- lobbying power (to get buildout incentives)
- a lot of money, at least right now
- lawyers and negotiating power
Remember, the grid already exists. A "charging infrastructure" is some last mile wiring and plopping down charger ports, ok, and maybe some review/planning/negotiation with the local power companies.
As soon as major companies are all-in (GM, VW currently), then Electrify America won't be able to get away with their crappy service, will build out, and the dealerships will provide a lot of expansion.
I believe GM could make a usable near-worldwide charging network in less than a year with their dealerships. I know the dealerships have been a massive foot dragging barrier for EV adoption outside of Tesla, but GM does have some power with them, and the writing should be on the wall.
You move to EV, or you are a shady used car lot.