Interesting irony. Edison much like Westinghouse was a very greedy bastard, mostly businessmen. I've never really seen Edison as a utopian type of visionary scientist. He comes off to me like any other entrepreneur trying to snub out the competition. Think about it, you would too if given a chance. That's why companies such as Apple, Google, Microsoft, 3M, Toyota, Novo-Nordisk, Alcon, and so on and so forth are they way they are. I think the light bulb and the mechanism for making it work would have been discovered, the equations for visual irradiance and electromagnetism existed far before Edison or Tesla. As many people have commented, someone else would have innovated. In another sense posts like these are absolutely baseless.