I agree that Trump is a narcissist. I agree that he has a loud mouth and that sometimes the stuff that comes out of it is not just foolish but outright bizarre. I never expected more from him than that though, so I haven't been disappointed. He's a tornado that we threw directly into the government that all of us agree is a great threat to our freedom. They can't control him. He says whatever the hell he wants and thinks he should be running the show. He's a threat to them.
There are literally BILLIONS of $$$ in CURRENT and FUTURE trade agreements that involve companies/corporations that will contract with the federal government.
Those empires are at risk when the apple cart is flipped over.
Plus, as POTUS he has the potential to find out what they've done and have been doing.
That's why they want him gone!