At the risk of over generalizing, I think 2 things are going on: 1) They hire a lot of smart but inexperienced people. I've noticed that those kinds of program

At the risk of over generalizing, I think 2 things are going on: 1) They hire a lot of smart but inexperienced people. I've noticed that those kinds of programmers often write clever and overengineered things, which means overly complex. 2) They get promoted for creating complicated things. They don't get promoted for writing simple things.