Completely agreed. Tesla is the only one operating them commercially in practice. They probably are cash flow positive, and even if not, are a loss leader to sell cars.
EV DCFC can be commercially viable though considering 1) the markup on electric is HUGE compared to gas (possibly 2x) and 2) they have a captive customer stuck 5x as long as a gas buyer, to spend $$ in their convenience store (where they actually make all their money)
The problem is the current companies are trying to do standalone stalls in others parking lots. I think we will eventually see some gas station chains bring out an offering, but there needs to be demand first.
Something like 90%+ of EVs on the road in US are still Tesla, so CCS has always been a niche within a niche here.
But there are enough people, they are packed.