He did die a pauper, but he was a millionare many times over at one time (probably worth close to a billion dollars in today's money). He lost all his money and all the money JP Morgan had invested in him chasing down the dream of wireless power distribution.
http://foia.fbi.gov/tesla/tesla1.pdf
Indeed he gained wealth many times over with his inventions. But to say he exited this world a happy, rich man is pure fiction. He was forced to spend his wealth to prove himself, and to further his goals for his homeland, America. Tesla was a great Patriot; Marconi was a foreign thief of ideas.
I won't even mention your glib inclusion of the Bush name.
Marconi stole Tesla's thunder, not to mention his dream.
If Tesla had been able to chase his demons, who knows where we'd be this day.
There are still those who chase the dream of wireless power distribution.
If only they can find a way to keep the patents intact and make a living from it.