This short-term hustle is going to hurt the practice of dentistry long-term, as people learn to distrust their dentists. Look what's happening on the non-dentistry medical side: when mainstream doctors fool and take advantage of their trusting patients for long enough, then anti-vaxers, Homeopathy, essential oils, faith healing, and the like start to take root.
Unfortunately it seems like this is just how a lot of the world works at this point. Take a communal goodwill, then try to exploit it into the ground for your own profit while making everything else far, far worse for literally everyone. Privatize the gains and socialize the losses as an intentional, foundational strategy.