You can be sure that if the scenario I’m describing starts to look likely, the Republican establishment will start rejiggering rules on the fly to disadvantage Trump, which will almost certainly invite lawsuits, raising the real possibility of legal fights over who is the Republican nominee that stretch even beyond Election Day. Oh boy.
Heading into such a scenario, Trump would have more leverage than anybody, because he would have the money and because he is the only one who has refused to pledge to support the eventual Republican nominee.
In that case, what could Trump get? The Economist’s Will Wilkinson suspects Trump wants a giant tax cut. The Art of the Deal in every public library in America? An ambassadorship? A cabinet post? What for? And besides, Trump doesn’t go for anything small-time.