Your engineering degree help you become better at engineering because you can more or less predict the outcome of how things behave. The theories are seldomly proven wrong.
If the matter you control in engineering were made of "business matter" life would be much more dangerous than it already is. Humans don't follow the laws of physics the same way.
You seem to be confusing doing good inside larger organizations with being good at business. There is little to no correlation.
Being good at business is more like being good at music. Education is no guarantee for success. Feel free to prove me wrong.