He was an exec from the 70s-90s who ran moderately successful music/movie ventures. He became is as rich as he is because he’s always had suspiciously perfect instincts as far as selling/buying his companies at the right times, and with art/real estate investments.

He’s basically retired and is just a general power broker now— mostly known for donating to random museums and schools so they’ll plaster his name on them..

He’s also probably the most influential Democrat donor in the country— when he supported Obama over Clinton in 08, the rest of Hollywood/high society Democrats followed suit and that had a huge influence on the election).