I mean granted, there's pretty big profit margins on fuel, but with electric they can get rid of the underground tanks, the trucks, the safety checks, the fire hazard, etc.
So whereas the oil producing countries have invested their incredible amounts of oil money into real estate, companies like Shell are investing in charging points. Because they're good, long-term investments, they don't need much attention, they can be placed anywhere, and every charge session is a bit of profit for whoever owns them.
I mean I'm confident Tesla's long-term strategy isn't so much producing cars - since the established car companies are going to overtake them in that regard, if they haven't already - but infrastructure, supplies, IP and raw materials (charging stations, batteries, technology and lithium / cobalt / intermediate goods, and big projects for power companies like grid-level batteries).
Source: I work for the competitor
This article says that Ubitricity has the largest network of electric charging points. I can't reconcile that with your statement about 90%. Which provider were you referring to there?
This looks like a hedge against the inevitable day when people stop buying gasoline.