I think indie games work a bit differently - you can earn a lot from being one of the free monthly listed games on PlayStation Plus, either by getting your game out there and being able to advertise others, and have people seen to be playing your game, or to up sell in the game.
I quite like how these guys operate, and their revenue appears to be increasing roughly 50% a year. I was hoping we could get them added to avoid fees as I only wanted a small position, but will have to buy else where.