1Apple’s iPad 3
5Mac OS X
Businesses remain a significant market for Microsoft, and a key audience for each new release of Windows. But the recent bring-your-own-device trend (in which employees use their personal devices in a workday context) could create issues for Windows 8 as it seeks to become the dominant OS on both traditional PCs and more mobile form factors, as it brings a flood of new contenders (iPads, Macs) into the enterprise and small and midsized businesses.
Although Google’s Chrome OS doesn’t exactly present an existential threat to Windows, the increasing popularity of the cloud could lead to an uptick in sales for Google Chromebooks, which rely exclusively on the cloud-based operating system. That could eat into Windows 8 sales.