Sailors & Powerboaters are different
Keep in mind that sailing is a sport, a skill, a hobby, and for many, a lifestyle. The compartive complexity between the two is what seems to drive purchase choices; not gas. Powerboating is for playing on the water or taking care of commercial business -- insert key, start motor, go. The remark of a powerboater sums it up. "I couldn't switch to sail, there are all those ropes, and sails, and things, the heeling, slowness, need for lessons -- it's all too much. I just get in my boat and go."