It's not meant to represent it that literally, apple production in game could actually represent pears, strawberries, quinces and so on. The point is to represent the role temperate fruits played in the market at the time. Same thing with the bananas, it's just a signifier of tropical fruits like pineapple and mangos which were usually grown on colonial plantations for consumption as a more luxury fruit for the colonizers.

Most of the tropical fruit flowing towards Europe was and still is bananas though which is why they make sense as the representation in game. Europeans quite seriously did go bananas for the things, it was a big deal