While there may be exceptions, in my experience most tour operators are mom-and-pop operations. We don't have the clout or the volume to get wholesale pricing even if we do repeat business with hotels, restaurants, etc. There are some operations where the owners live where they run tours locally and own the facilities they use for guest accommodations and so can offer lower prices. Being a tour operator is not a sure-fire way to get rich. Most of us do it because we love to bike and want to share it with other cyclists who are willing to pay to have someone attend to the details instead of having to do it themselves (there are of course also people who are independent enough to plan and conduct their own bike trips—more power to them).