I'm not sure if it was ever explicitly stated by the writers, but IIRC, Russ put "radio on the internet," while Mark Cuban first hit it big with broadcast.com.

I'm not sure if it was ever explicitly stated by the writers, but IIRC, Russ put "radio on the internet," while Mark Cuban first hit it big with broadcast.com. I believe they based him off of Mark's big personality too, mocking things like "three commas" and investing in a bunch of stinkers over the last 20 years.