Diversity plus freedom of choice creates inequality, and the greater the diversity, the more extreme the inequality

From Power Laws, Weblogs, and Inequality by Clay Shirky.  

A persistent theme among people writing about the social aspects of weblogging is to note (and usually lament) the rise of an A-list, a small set of webloggers who account for a majority of the traffic in the weblog world. This complaint follows a common pattern we've seen with MUDs, BBSes, and online communities like Echo and the WELL. A new social system starts, and seems delightfully free of the elitism and cliquishness of the existing systems. Then, as the new system grows, problems of scale set in. Not everyone can participate in every conversation. Not everyone gets to be heard. Some core group seems more connected than the rest of us, and so on.

Prior to recent theoretical work on social networks, the usual explanations invoked individual behaviors: some members of the community had sold out, the spirit of the early days was being diluted by the newcomers, et cetera. We now know that these explanations are wrong, or at least beside the point. What matters is this: Diversity plus freedom of choice creates inequality, and the greater the diversity, the more extreme the inequality.

In systems where many people are free to choose between many options, a small subset of the whole will get a disproportionate amount of traffic (or attention, or income), even if no members of the system actively work towards such an outcome. This has nothing to do with moral weakness, selling out, or any other psychological explanation. The very act of choosing, spread widely enough and freely enough, creates a power law distribution.

Totalitarian authoritarians want to coerce and enforce and equality of outcomes.  Not only do they fail but they destroy the complex system they were trying to improve.

People comfortable with Freedom and Choice are comfortable with the chips falling where they may while acknowledging that this almost always results in a Pareto distribution power law.  The system generates bounty for everyone and everyone is better off even though they are increasingly unequal (in increasingly diverse systems).