If the person broke the law then you can punish them, if they didn't then you can change the law and say thanks for teaching me an important lesson never to do

If the person broke the law then you can punish them, if they didn't then you can change the law and say thanks for teaching me an important lesson never to do business with you again. The use of force is not something that is thrown around lightly, and what if that guy thought what he was selling worked? I mean are we going to lock up all the homeopath people?