Twenty years ago, 97% of all personal computers were desktops and laptops running Windows. Today, 90% of desktops and laptops run Windows, but now constitute just 36% of all personal computers. While business still runs on Windows desktops and laptops, only 15% of new tablets feature Windows and Windows phones are virtually nonexistent.
Microsoft had big expectations for Windows 10 at product launch on July 29, 2015, predicting that one billion devices would feature Windows 10 in “two to three years” since Windows 10 would work on every conceivable device.