They fear lawsuits. Justice isn’t surviving.
They fear blacklisting and persecution.
I think the “lawsuits” thing is part of it, but mostly I believe they drink the same swamp water and breath the same swamp gas as most everyone does in our nations capital.
Trump was always an outsider and that was true for the GOP establishment as well. He cut into their game and pushed them from their comfort zone so they were almost as anxious to spit him out as the left was.