1. The corporations that grow and distribute built a solid infrastructure;
2. The workers are treated like crap;
3. And they only grow one variety, the Cavendish, which allows growers to reap the benefits of economies of scale.
A Freakonomics blog post pointed me to this page, which has a bunch of interesting banana info. Did you know India is the largest world producer of bananas? I was shocked. I thought bananas only grew in tropical climates. And did you know that there is enough energy in two bananas to sustain you through strenuous 90-minute workout? I'll definitely be eating more bananas before my Ultimate matches from now on.