Research firm Gartner Inc. said in a research note Monday that, despite competition, Apple’s iOS will continue to be the top operating system on tablets worldwide through 2015. The iOS will account for 69 per cent of tablet operating systems in 2011 and represent 47 per cent of the media tablet market in 2015, Gartner predicted. The firm said Apple Inc.'s iPad reinvented the tablet PC market in the same way as the iPhone reinvented the smartphone market. “Seeing the response from both consumers and enterprises to the iPad, many vendors are trying to compete by first delivering on hardware and then trying to leverage the platform ecosystem,” Carolina Milanesi, research vice-president at Gartner, said in a release. “Many, however, are making the same mistake that was made in the first response wave to the iPhone, as they are prioritizing hardware features over applications, services and overall user experience. Tablets will be much more dependent on the latter than smartphones have been, and the sooner vendors realize that the better chance they have to compete head-to-head with Apple.” Gartner forecasted that Google Inc.’s Android operating system will increase its worldwide share of the media tablet market from 20 per cent in 2011 to 39 per cent in 2015. Google’s decision not to open up the Honeycomb, its first operating system dedicated to tablets, to third parties, will prevent fragmentation, but it will also slow a price decline and ultimately cap market share, Gartner said. The firm said that Research in Motion Inc.’s QNX operating system, used on the Blackberry PlayBook, is a strong platform, but it will take time for RIM to attract developers and deliver a "compelling ecosystem" of applications and services for QNX and position it as an alternative to Apple or Android.