You could have done a much better job explaining what Bitcoin is haha. But who am I to criticize? At least you are talking to merchants about Bitcoin 
actually, spending 10 minutes explaining the details ruins it at first contact. more success has been found just by mentioning it briefly and subconsciously the merchant gets intrigued.
+1 ^^ THIS
Suggestion leaves the the entrepreneur questioning whether or not they are missing an opportunity. Not all humans are entrepreneurs but most seem to have the spirit of an opportunist.