There is No Path for Cruz to win the needed Delegates, so, other than wanting a Contested convention, why is he in the race?
Especially since he is going to have to apologize to Mitch McConnell in order to stay in. If he apologizes to Mitch he might as well just stick his head in the toilet and take a world-class swirly.
If the dough continues to flow, he’ll continue to go.
Look to the funding sources to find the answer.