Windows 7 has quickly started increasing its market share of desktop operating systems, nearing 61%. If you're wondering why this is happening when Windows 10 is almost here, the reason is this: Windows 10 will be available as a free upgrade for those running Windows 7 and 8, and the new OS will have the exact same hardware requirements as its predecessor, so the majority of PCs should be able to run it just as well. Because Windows 7 was launched in 2009, a license is more affordable than for Windows 8, so many users are switching to this version to take advantage of the Windows 10 free upgrade offer.