The Bush's and the cronies from Bush jr presidency would rather run the party to the ground.
Trump is at the point of making these folks old and obsolete. They are fighting to maintain relevance and there own jobs.
Possibly the most important thing they are doing for themselves is to try and keep the party at status quo for the benefit of the moneyed crowd.
Won't it be a kick if the democrats become the party of big money and illegal immigration. A complete switch for both dems and pubs.