Hugh Pickens DOT Com writes: Horace Dediu writes at Aymco that in 2013 there were 18.8 times more Windows PCs sold than Macs, a reduction in the Windows advantage from about 19.8x in 2012. But the bigger story is how Apple’s mobile platform including iOS devices has nearly reached the sales volume of Windows. In 2013 there were only 1.18 more Windows PCs than Apple devices sold. Odds are that in 2014 Apple and Windows will be at parity. Dediu says that the Windows advantage itself came from the way computing was purchased in the period of its ascent in the 1980s and 1990s "when computing platform decisions were made first by companies then by developers and later by individuals who took their cues from what standards were already established. As these decisions created network effects, the cycle repeated and the majority platform strengthened." There was concentration in decision making in the 80s so a platform could win by convincing 500 individuals who had the authority (as CIOs) to impose through fiat a standard on the centers of gravity of purchasing power. Today, with mobile products there are billions of decision makers. and the decision making process for buying computers, which began with large companies IT departments making decisions with multi-year horizons, has changed to billions of individuals making decisions with no horizons. Companies have become the laggards and individuals the early adopters of technology. "Ultimately, it was the removal of the intermediary between buyer and beneficiary which dissolved Microsoft’s power over the purchase decision," concludes Dediu. "The computer has become personal not just in the sense of how it’s used but in the sense of how it’s owned." Finally, all the above is almost moot, given the rise of Android, something that is beating both Cupertino and Redmond alike.