Tablets, smartphones will cause boom in "lite" OS -

Global shipments of portable internet devices, which run on so called "lite" operating systems, will hit the 150 million per year mark in 2015

That's according to Ovum, which found that shipments of devices using "lite" operating systems - including iOS, Android and RIM’s BlackBerry Tablet OS - will increase from 14.2 million at the end of 2011, a compound annual growth rate of 60 percent.
 
Tony Cripps, Ovum principal analyst, says the shipment growth will be driven by users looking to "complement their smartphones
 
“Nonetheless, the greater ease of use of smartphones for the majority of consumers means that shipments of the tablet and other ‘lite’ OS devices will not dramatically erode the growing demand for smartphones. This is especially pertinent given their obvious similarity in hardware and software technology,” he added.
 
North America and Western Europe are the two regions which Ovum predicts will fly. They will experience the greatest penetration of tablet and other mobile internet devices by 2015, with 23 percent and 19 percent of global shipments, respectively.
 
However, the two will be trumped by the Asia Pacific region, predicted to take the largest regional slice of shipments by the end of the period. Ovum says this will be because of the potential addressable markets and the relatively low penetration of PCs. It predicts shipments in the region will account for 35 percent in 2015.

Google looks like it will dominate by numbers over Apple's OS - with Ovum predicting Android will push current frontrunner iOS into second place. 
 
Cripps adds: “We believe that Apple constituted 90 per cent of the market in 2010. However, by 2015 we expect this market share to drop to 35 percent and Google’s market share to rise to 36 per cent. Other software platforms, such as RIM’s Blackberry Tablet OS and HP’s web OS, will find some success but between them all they will only account for 29 percent of the market."

This is because the dominant software platforms from Apple and Google attract the most attention "from the cream of the developers". As a result they gain the "best, most talked about applications and content", which drive buying.