“The rules are in place and the ground troops know the rules”
Who put the rules in place? Did the Colorado voters?
If it wasn’t Cruz, someone else would be their elite baby.
The Republicans in Colorado. It's their primary. Most of those who drafted and passed the rules were Republicans when Donald Trump was a pro-choice, pro universal health care, pro-partial birth abortion democrat who was donating to Pelosi, Clinton, Schumer and Reid.
Each state Republican party drafts their own rules. If you wanted to be a part of that process, then you should have worked in the party and gotten yourself on the rules committee for your state.
Trump has no ground game. He is running a top-down campaign and Cruz is running a grass roots campaign. That is the way it is.
When Trump wins when he plays by the rules (like is winner take all primaries that disenfranchise most of the voters) he is happy. When he loses, he whines about how unfair the rules are.