Of those 88,000, 80,000 would probably never buy AppGameKit or Game Guru. Even if they only got $1 from each sale, that's $80,000 they would have never had.
If 10% see the light and convert to the wonder of AppGameKit, that's 8,000 more people to spread the word in schools, colleges, amongst friends. More AppGameKit games out in the wild to attract attention.
Game Guru is a different thing altogether. Anyone who gets drawn in WILL buy more assets. I see it like Henry Ford - he'll give you the car for free if he gets the servicing contract.
I could be wrong. It's definitely a very different direction that TGC are taking in the last few months, but I'm sure that market saturation is the way to go.