People that are trained to build things are more likely to start companies that build things, than those that are trained to administer businesses? Also, did y

People that are trained to build things are more likely to start companies that build things, than those that are trained to administer businesses? Also, did you know that the majority of mba students are engineers? I am not sure why they needed a study for this. I was told this fact in engineering school in 1994.