Tesla was undeniably brilliant, and a great deal of conjecture has been built around the things he 'may' have envisioned or even invented. His employment by Edison, sadly, later developed into a professional feud over the development of electrical power, which was not pretty. In the thirties, Tesla was rumored to have developed an electrical 'death ray', and upon his own death in 1943 at age 85, the US government descended upon the hotel room he lived in and confiscated all of Tesla's notes and papers.
Tesla's nephew in Croatia protested that, and the government sent Tesla's property to the man in the fifties. But J. Edgar Hoover was involved, and there is no accounting available to determine if ALL of Tesla's notes were sent to a place that was at the time a member of the Balkan Pact and considered a communist state.
It really took way too long for the contributions that Tesla has made to the world to be acknowledged. He deserves to be remembered for his genius, and not for his much smaller failings as an entrepreneur.