I think that the market will decide. It will be a balance between few major things like: price, range, efficiency, safety and fancyness (cars are more emotional than rational :-).
Depends; in my country there were / are significant cost / tax benefits for getting hybrid and fully electric cars (for lease cars, and there's quite a lot of those here). If driving an electric car is cheaper then people will go for that too. Does Tesla still do free usage of the supercharger network for the Model S? That's another incentive, given the cost of electricity over time.
The same happened in the beggining of car industry. https://auto.howstuffworks.com/fuel-efficiency/hybrid-techno...