I assumed both are closely related (I'm no economist). http://en.wikipedia.org/wiki/Pareto_distribution My original comment was to put just enough effort to capitalise on the first few parts of the distribution.

As an outside observer, indie game development is still doesn't seem sustainable. I've read too many stories of people with initial success and try to build a company around it to finally fail. There are too many variables in play to build predictable revenue.

There are of-course exceptions, it mostly involves making as many games as possible and praying one of them clicks (Zynga, Rovio etc). In such a market, the competition is ruthless. Both perfect competition and complete monopoly are not favourable[1].

[1] http://blakemasters.com/post/20955341708/peter-thiels-cs183-... (Read from "IV. Capturing Value")