If Trump succeeds most of them will eventually be unmasked and wind up in prison, or at a minimum lose their power/wealth/status as a result of uncovering years of corruption.
I think they would prefer to take Trump down, lose their "jobs" and retire wealthy and protected.
Not necessarily. He can take down one or a few as examples to the others, and they can fall in line or be finished as well. There are plenty of good citizens who can take the place of the leaders who have been compromised. It's part of swamp draining.