They’ve bought above it all.

[Ostap]

During his 1970 campaign for governor of Alabama, Wallace railed against “rich folks” who gathered in country clubs, drank “those martinis with their little finger up in the air,” and called for integrated schools. “Guess where their children go to school,” he said. “They go to lily-white private school. They’ve bought above it all.”
source

Hello, could you explain to me the part in bold?

 

[SoothingDave]

The thesis is that the rich make situations bad for the poor and middle classes, but have enough money to be insulated from the effects of the policies they support. They are able to "buy" their way to be "above" the situation of the lower classes.

(I am not excusing or supporting the racial aspect of Wallace's argument. Just explaining that this class rhetoric is even today effective.)

 

[Tdol]

State schools were integrated, but private education much less so.