Carl on 20 May 2016
Because they want to cut out the cycle of long development and poor returns.
3rd party content dominates the industry. What money that could be spent developing an exclusive game for 3 or 4 years that could potentially fail (Driveclub), the money can be better spent creating marketting and DLC deals with 3rd parties on real system selling content like Grand Theft Auto, Star Wars, FIFA, Call of Duty, Battlefield and so on.
Furthermore, the money can be pushed towards indie developers, giving the platform that same "exclusive" push at a fraction of the cost.
