Well, Edison was a better businessman than Tesla. If my memory serves me right, Tesla signed away his huge contract with Westinghouse, so the company wouldn't go bankrupt?!?! Can't remember exactly, but there was a huge war with D.C. and A.C. current and this might of put Tesla on edge. Basically, Tesla won the A.C./D.C. electrical wars from Edison, but lost his shirt by giving up his rights.
I think Tesla cared more about engineering, than money. There was a woman in Tesla's life also, but he wasn't interested. You should watch a movie or read a book about him. Great story.
Tesla has a car company named after him, think Elon Musk owns it. Some reward after all he gave to society. Business is brutal, it's like war. You pretty much have to put your life on the line sometimes.
Tesla could of sued Marconi (the inventor of the radio) for using his patents for the new device, but decided not to. That's the kind of person Tesla was. I believe he also wanted to give free electricity by wireless transmission, but he didn't have much business sense.
Can you imagine electrical companies giving free energy now a days? That's why Tesla died poor, he was like the people's engineer. Pretty much all modern electronics and electricity are thanks to Tesla's work.