Replying to shuttle up to the mountains

hey, why doesnt vail resorts have a bus or someting that goes from denver up to their resorts, that would be so much easier for those of us who are too young to drive and have to annoy our parents to take us, I have emailed and talked ot them so many times and they say no. 1: they would earn money from the bus fare and also from how many more people would come to their resorts, lift ticket sales would go up, they are very stubborn, anyone know a bus that goes up to the mountains from around denver? thanks