Funny thing is that Tesla made a lot of interesting inventions and discoveries, but was barely able to keep the focus to bring them to fruition. He had his lab busy with widely different experiments, oftentimes conflicting, leading to huge setbacks. Tesla is the prime example of a great mind with bad social skills and too many things juggling at the same time.
He got to do exactly what he wanted for most of his career, which was research, live in the Waldorf, and his patents were the foundation of Westinghouse.
Ever look at a power substation and see all those Buck Rogers-looking transformers? Those are his original designs.
Besides AC electricity generation and transmission, he also patented wireless remote control and was one of the earliest pioneers in radio. Niagara Falls hydro generation was his idea, and nobody understood what he was doing until the on switch was thrown.
Had he wanted to be a businessman, he could have done that at any time. I'm glad he chose the inventor path.
Can you please edit swipey tropes like that out of your posts here? They lead to ill will and poison the well. The rest of your comment is just fine without that first sentence.
He was a great inventor, yes. But the results of all his efforts, in mathematics and engineering were fruitless for him. He died in debt, a disillusioned man. And why? Perhaps a good biography of the man will enlighten you.