Do Republicans realize that Trump lacks the patience and foresight to deal with an adversary like Speaker Pelosi?
She also realizes that Trump's legal problems are far from over. The Southern District of New York is still investigating Trump's finances, and the New York AG is separately investigating state law crimes. The results of these investigations will drop in the coming months and will tip the scales further towards impeachment.
Trump doesn't know how to deal with this kind of slow burning enemy.