The short head theory is kind of the opposite of the long tail theory.
The long tail theory from the early days of the internet (2000+) claimed that “our culture and economy is increasingly shifting away from a focus on a relatively small number of “hits” (mainstream products and markets) at the head of the demand curve and toward a huge number of niches in the tail.”
The short head proves otherwise - in the last several years we have moved towards an even smaller number of mega-hits!
The present is not selling more of less - it is selling much more of much less!
This is the short head - http://www.theshorthead.com/