He's no socialist. He wants to be able to game the system, and with dems in power he can do that.
One way is to take a company that is prevented from growing due to regulations or taxes or whatever, he buys them, its his lawyers, and his money, and he can "get them over the hump" so to speak.
He's like a predator who picks on the wounded who have been ravaged by the dems.
The irony is that his dad Howard Buffet was a great conservative congressman back in the day.