Like Trump, PBPs are naturally transactional; their opinion of him will depend, not on red meat or his Twitter account, but on whether he delivers the goods. In their case, “the goods” means deregulation and tax cuts for businesses.
While Trump and the GOP Congress have sent the right message on deregulation, the chaos surrounding the administration is a clear source of concern, and the failure of Obamacare repeal doesn’t bode well for tax reform. To make a long story short, the PBPs will swallow a large dose of corruption and incompetence as long as Trump makes them money, but if he doesn’t, unlike his Reactionary base, they’ll jump ship.