It seems to me that when we are talking about the capture of politics by “Washington Establishment”, we are largely talking about it’s capture of the discussion of what adds “value” to the ecconomy.
For example, that the banking system as it currently exists is so important to the economy that it must be bailed out at taxpayer expense, but the same taxpayers are not allowed to ask exactly what sorts of actual economic “value” are being protected.
There was no "taxpayer expense" for the bank bailout.