Even when EV's become more of
Even when EV's become more of a 'norm', the BUSINESS model for charging stations will be challenging. Again, the demand will not be continuous, but random, because so many will be charging at Home, or the Office. The Government is beginning to fund charging stations at public locations as well as underwriting them for Apartment complexes.
So now you're competing with the Government as well.
BP and other entrants will need to stake out high volume / longer term parking locations like shopping malls and mass transit, airports, etc, and half those are, again, subsidized Government facilities.....
There are reasons beyond EV's being 'the norm' that several companies have bowed out of this market.