Dash is like a windup rubberband driven toy. Cute but not useful for anything serious.
Me: "Hello Mr. Merchant. Would you like to use a payment system that is Instant, Secure, Doesn't rely on a third party charging you 3-5% in fees, and leaves all of the funds in YOUR control?"
Merchant: "No, those things sound terrible"
Somehow, I don't think that would be their answer.