The Chevy Bolt uses Combo Cord, which supports J1772 and CCS.
Looking around Silicon Valley, almost all charging points have J1772. Some are free, some require payment, and some require membership in a charging plan. Higher power stations are mostly CHAdeMO.
There's a big retail markup on electricity. $0.59/KWh at some stations. And there are payment "plans", which look like cellular phone plans. Tesla's "Supercharger" is supposedly unlimited once you've paid your $2500, but apparently if you use ones near your residence, they send you nag messages saying it's really for travelers.
[1] https://www.evseadapters.com/ [2] http://shop.teslamotors.com/collections/model-s-charging-ada...
Because its meant only for travelers. Its for unlimited cross country travel, not as your local free filling station.
Grocery stores are starting to have deals with charging station companies, because it gives them a competetive advantage to have a charging station at their store.
Some government incentives can be great to give the infrastructure that initial boost (to help boost initial EV sales) but it seems the market can handle it after that.
Certainly there are "last mile questions" like number of charging devices and type of charging plug(s) and adding plugs to circuits/stringing new circuits near building exteriors and in parking lots and figuring out who to charge for that, but none of them have particularly "hard" problems left to solve at this point.