No, it’s not above my pay grade.
I’m not sure that Cruz asked for these endorsements. Are you? Could be, since politics is nothing but a game, these endorsements are a} to sink him or b} they don’t have another candidate sine Jeb and Rubio crashed and burned.
I think Trump has “establishment” endorsements...does he not?
OK I will give you my take on it.
The GOP establishment (GOPe) knows, understands and is convinced that Trump can not be bought. Trump does not need money from rich donors such as Robert Mercer. That fact threatens their empire of easy money making life of in DC.
The GOPe has realized that all of their favored candidates such Bush, Rubio, Kasich etc can not get 1237 delegates. The last hope to stop Trump in their minds is Cruz. So the GOPe is piling on to the Cruz hope.
The fact is Cruz needs 87% of remaining delegates to reach 1237. Mathematically possible, but in real world, impossible.
If Trump falls short of 1237, guess what is going to happen? The GOPe will toss Cruz out like a used toilet paper, and anoint one of heir chosen ones as nominee.