I find your logic interesting...in a humorous way. On the west coast, Kawi does not own the market. I would honestly say it's pretty even. However, you describe several brands as "Wave Runner", but don't even mention Yamaha, who makes the real "Wave Runner". EVERY dealer I've talked to who carries multiple brands would prefer to sell SeeDoo's because it keeps their repair department busy, but would buy the Yamaha for their personal use because of their bulletproof motors and value for the dollar.
I didn't look to see where your from, but IN MY AREA, Kawi is a long way from owning that segment.