I would be curious on how many pro level players does Gateway have outside of the St. Louis area. It doesn't seem that they have anyone that is not a personal friend of Dave McCormick. I think he has himself listed as a sponsered pro as well. If the player pool is limited then you wouldn't get the top players.
His marketing seems sound. Its just like Christianity - target children and youth and they will grow in the church. Gateway targets beginners and have them get so used to using your product that you wouldn't want to throw something else. Much like Innova in Louisville. There are 4 places to buy in Louisville. Dicks, Play it Again and Daves (when it is open). 3 of them are Innova only. New players are more than likely going to use Innova because it is accessible. Gateway, and other companies, need to be more accessible.