So same reason Honda declined to import the rather great Honda Fit/Jazz hybrid to the US, no market. While this make little sense for a car already under production, it is incredibly costly to produce a low volume electric and there are no profits. They are only doing for access to the large California market (and I think 9 other states that mirror CA laws). Think of how many Leafs Nissan sells versus their ICE models, it is a very small percentage (global figures are that EVs are 0.15 percent of the total market). As far as I know, not a single company (including Tesla) have amortized the cost of EVs and have turned a profit, and most admit openly that the cars are subsidized with lower than cost selling prices.
Of course, EV's will become profitable if they ever become mainstream, or can compete on price with ICE cars. Companies such as Hyundai are taking a long term view of things to their credit, but as you can see, their timing is incredibly bad in markets such as the US where fuel is not highly taxed (not even high enough to maintain roads or begin to compensate for pollution).