I dont think they fear him. They hate him.
Hate is the result of fear.
And the reason they hate Donald is that they can’t control him.
There is a coalition of those who hate and those that fear him. The swamp does both. Chuck Shumer gave us a clue when he stated on Rachel Maddow;s show that the intelligence community (IC) can get you 9 ways to Sunday. These swampees get rich off "the system" while simultaneously being compromised (bribed, blackmailed, threatened). Big league donors love "the system". NGO's love the "system". Those who hate us, love "the system". Imagine a loser like Joe Biden in the private sector. He would be a third rate traffic-ticket lawyer in Wilminton, Deleware. I'd bet a dozen doughnuts that Robert Deniro is being blackmailed because the IC has film of him with an underage person.