This isnt a random usage fee, this is for areas they claim are too busy, so you gotta pay if you want to gain access.
Congestion pricing is the PC way to describe it.
Price gouging is the more honest term.
There was no world where SpaceX could support unlimited customers in a cell region.
You can charge a fixed rate and ration bandwidth during peak use.
Or you can charge a variable rate in order to maximize revenue during peak demand.
One maximizes utility while the other maximizes profit.