Instead, we found out that the 65,000 or thereabouts caucus goers supported Cruz. That had impact on the delegate count. The opinion of Coloradans who decided not to caucus doesn't matter. It would be like polling the people in 2012 who stayed home and didn't vote for Romney or Obama. Mildly interesting, but 100% unimportant.
Where did you get the 65k number?
The real question is with the State of Colorado. Why are they not having a primary election? why are they afraid to let the people make their choice? Perhaps it was a Ron Paul state and that impacted the decision.
Certainly they have plenty of money from pot sales to afford an election.