easy answer one people pay the price , two they have no competition in the race market and can lay claim to all the onwater testing they do in the harsh enviroment of racing. simply put they put a monopoly on the market.
but dont take this wrong that is what business is all about controling the market.
but it leaves no real choices either. thats why those that build the better mouse trap such as imco, bravo shop, weisman and so on need to continue in thier ways and give the average performance boater options.