I don't think there is a market for most of these tropical fruits when compared to the normal of Apples, Pears, Peaches, Grapes, Oranges and Bananas.
It usually takes a heavy marketing push to get any fruit accepted by the public.
So unless some investors plant huge plantations of tropical fruit (where land is at a premium) and then market it to the American consumer,
We probably won't have it anytime soon.
You should look into the history of bananas, pineapples and citrus to see the amount of work it took to get these fruit into the typical grocery.
I found it pretty interesting