Nobody controlled him during first term. He kept firing all advisors and close folks on smallest whims.

Now its much worse, he got more senile, vengeful and he is surrounded by pure yes men, so progressively more and more out of touch with reality. Very similar path to putin whom he admires for whatever f*cked up reasons.

He admires Putin because as a Narcissist he doesn't understand why there should be any limits on his power.

They should have realized

1) how much damage he would do to their interests because he is so deeply stupid

2) He is so stupid and stubborn he is hard to control.

The rich letting Trump become President to get lower taxes is as irresponsible as hiring a mentally disable child molester to babysit your kids because he is cheap.