......I don't want to see the Gran Prix of Monaco raced in Chrysler mini-vans because that's "most people" drive, do you?
Auto racing is a good analogy. In the few venues that I'm familiar with, they do require limitations, such as horsepower, tire size, airfoils, etc. That does not impede the creative energy around the remainder of the vehicle, in fact, it focuses it on specific things that would be useful to the rest of us. Much of the auto industry's research and development is done on the race track. There is no popular auto race that I am aware of where anything goes and last year's winner decides what you will race next year, particularly when they are the only one's who can afford or have access to what they pick.
I think this "winner picks" oddity has directly caused a huge decline in popularity of the AC, now that it has been hijacked.
Wing sails and multi-hulls are quite fine in the race, IMHO. There should be limits on size or length or something that allows more creativity into the process, not just one team. Perhaps, if you limited the boat length or wing sail area or something like that, the cost would decline and the competitions would truly be on engineering creativity and sailing skill, not just maximizing the possibilities.
It has become like watching 18 wheel trucks competing in drag races with rocket engines strapped to their roofs. Those are freak shows, not races. Who can't make it go fast like that?