I have always felt that Steve Jobs and Thomas Edison are two sides of one coin... it seems that both of their successes are related to the mix of a driving vision, controversial management style and relentless push for innovation. Different eras, similar results...
Let's say Edison created none of his lab's inventions. But it was still a lab he put together, was it not? He should get some credit -- so should the individual inventors, no doubt, but the question is just how visionary Edison was, and if his only real vision was creating a lab, hiring, and so on, then visionary he most definitely was.
Culminating ideas to place items in a market place and market them to be desirable to the public, while electrocuting elephants is hard work for any man.
How much meditation time does it take to strong arm other people's work over and over again?
It's a talent, but visionary doesn't seem apt.