This sounds like the investment banks are reacting to the Goldman Sachs case against Sergey Aleynikov, either they want to avoid someone “stealing” their code,

This sounds like the investment banks are reacting to the Goldman Sachs case against Sergey Aleynikov, either they want to avoid someone “stealing” their code, or they just don’t want to have to deal with that kind of situation. It’s certainly not right, but if you work in that sector, it’s something you need to be concerned about and take these kinds of attitudes into consideration.