pretentious gits posturing about the hint of strawberry or the mouth-feel. All the bananas you have ever eaten are genetically identical of a cultivar called Cavendish. Up until WWII, a different variety Gros Michel was king. But ' Panama disease' a novel fungal pathogen Fusarium oxysporum ripped through the banana plantations about that time and shook Dole, Geest, Fyffes and Chiquita's shareholders to the core. The great banana moguls responded by replacing Gros Michel with another seedless, but crucially F. oxysporum-resistant, strain. Cavendish didn't taste so good but that sort of consumer resistance was reduced to nothing by an aggressive advertising campaign: "These are not the droid you are looking for; these are bananas, they taste delicious." There is an interesting article in Wired setting out this stall: good on the epidemiology, more arm-waving on human [=consumer] psychology.
we have seen with black ash Fraxinus nigra and English elm Ulmus minor, the next susceptible individual doesn't have to be next door it merely needs to be within the dispersal range of the fungus or its insect vector.