There's definitely a root cause: he's in power now. I don't know why people assume he must have seen something shocking to change him, the position of power alone could easily do it. His job is now to defend the powers that the government has acquired. That is what he was elected for, whether people want to believe another fantasy or not.

Special interests and insiders own Obama just as they have every modern President.

Our system is not run by: Congress + President + Judical. The Pentagon, US military, DOJ, NSA, IRS, FBI, CIA, Homeland Security, Federal Reserve etc are all directly involved in politics.