Nobody knows shit about video games. There are several factors, both combined and individual that make video games fun.
>Challenge
>Complexity
>Exploration
>Collection
>Visual Aesthetic
>Auditory Aesthetic
>Simulation
I probably missed a couple.
Everyone has their own pet-favorite factor that they hold above all the rest because we are all individuals from various ethnic backgrounds and have different interests that "satisfy that itch."
Creating a game that satisfies every itch is no easy task, and I don't think it's really something you could solve as easily as not hiring gamers.
I think the real reason he doesn't hire gamers is because they(we) generally are skinner box addicts who turn to escapism to provide surrogate achievement because they for whatever reason can not in real life.