Right. But then I made an argument saying that I disagreed with that. They don't need a "Pokemon Master" gimmick to sell their merchandise. They can just keep on doing what they're doing: making new Pokemon and then making merchandise of some of the most popular.
I think you're right in saying that no Pokemon Masters exist. I also think Ash will never reach his vague goal of becoming one. But that's a way to continue the anime, not necessarily to sell merchandise.