Microsoft's new Windows Vista, which goes on sale on January 30, will not become the dominant PC operating system until 2009, research firm Gartner predicts. Vista's biggest competitor isn't Apple's Mac OS X or the geek darling Linux. Rather Microsoft's own Windows XP will be the main factor slowing Vista's growth, Gartner said.
Despite being shipped with most new PCs this year, Windows Vista would only be installed on 12.3 per cent of those found in homes worldwide, Gartner predicted. For the same period, Windows XP's market share was expected to dwarf Vista's at 77.1 per cent.
But the take-up of Vista is expected to ramp up in 2008, eventually surpassing Windows XP by the end of 2009. By then, Gartner said Vista's share would be 55.4 per cent, compared with 40 per cent for Windows XP.