Rush “sold out” means he went on a rant about how great Cruz is when he repeatedly said he wasn’t supporting anyone. It is obvious he is supporting Cruz now, by his own words.
It has nothing to do with offers of anything. Rush is in Cruz’s corner. He has lost a lot of listeners as a result.
Even if it’s true that Rush is supporting Cruz now, that’s hardly “selling out.”
And what evidence have you heard that he has lost a lot of listeners specifically because of supporting Cruz?
Rush supporting a conservative is not a sell out. When he supported Romney back then, that was a sell out