The establishment doesn’t want either Trump or Cruz.
They are spending their money on Cruz in the hope that he and Trump come to the convention basically tied for delegates AND damaged by attacks like the “wife war” AND with their voters so mad at ‘the other guy’ that they’ll accept a selection from the delegates.
It will take some very nimble footwork to avoid that scenario.
I don't think a non-Trump or non-Cruz nomination is even possible. BTW, Newt agrees with that position.
Trump is going to get somewhere between 1100 and 1300 delegates. Cruz will be a few hundred behind most likely. For Kasich to get the nomination well over 1000 Trump and Cruz delegates are going to have to change their vote. Not in the cards. Converting a couple of hundred Kasich and Rubio votes to Cruz is way, way more likely. That would work for Trump as well but I just don't think those votes are going to go that way. That's mostly gut feel at this point but I'm betting I'm right.