I also saw in a BET interview where Jay says Doug and him couldn't agree on a price for the buy out...so they flipped a coin. And Jay lost so it came to 5million.
The Game is saying he has (or is trying to get) as much money as Pablo Escobar, a drug lord from Colombia who was ruthless as he operated his drug empire (including cocaine which is often turned into crack cocaine) to gain money and power
Busta Rhymes is declaring that he's the Top Gun (the best) which is the name of a Tom Cruise movie. He will then metaphorically "shut down your firm" (destroy you). The Firm was also a Tom Cruise movie, where he shut down a corrupt law firm.
Kayne is asking if they have ever been unique enough to wear shoes such as Gucci Bucks, or Adidas that dont require shoe strings in order to be stylish.