Well I guess it was the cost that ultimately killed off the J-Boats which led post WWII to the 12 metres and the post war resurgence that made the AmCup the prestigious event that it once again became.
Personally I find the idea of spending USD150.000.000 on a boat race obscene. Particularly as none of it ends up in my pocket.
Problem is I guess that mono hull match racing makes for pretty boring TV. Funnily enough of course the fastest AMCup boats of all time failed to get any TV coverage in many parts of the world.