We can encourage them by let them experiment with it, let them test it and than they will soon or later gonna sue it for sure.
No it's not right to let them experiment because businessman have no ide what bitcoins are but you can explain them instead of let them experiment they also need a basic explaination.
And who is going to pay them remittance or bear the jail when the experiment turns to a scam one?
Many people have organised such scam events in order to make people buy bitcoins for them and then they ran away with their money. Even the sales organizers were not aware that it was a scam and got beaten up by the public.
Organizing a mass advertisement campaign for local businesses is not an easy job. You have to make them accept it.