[Apple and Google have locked application discovery and distribution within their app stores. VisionMobile's Andreas Constantinou explains how Facebook is using the web to disintermediate Apple/Google and why the web needs a new leader].The platform duopoly.In just the space of 3 years, the mobile platforms landscape has changed from an election race to an oligarchy. The network effects at the heart of the Apple and Google business models have created formidable barriers to entry. The growth in device shipments and apps created seems to continue a relentless climb, showing no signs of develope...