I don't have a problem with a single regatta, either. I DO have a problem when all local/regional regattas that are used as a "manufacturer point system" are single make events. This squeezes out all the non-manufacturer boats from many events.

In some areas, it has put cat sailing to extinction (or almost) and others it has helpd solidify the brand of choice. Was the solidifcation by choice of the sailor to pick that manufacturer or the pure want to go sailing and that was the only game in town? The manufacturer gained in some areas and lost in others - is it worth the bad publicity/divisiveness?