The ‘worst-selling Microsoft product of all time’ sold just 11 times, and eight people returned it — why you’ve never heard of OS/2 for the Mach 20

Microsoft can sell almost anything these days; even the relatively unpopular Xbox Series consoles have sold tens of millions of units. The company is a household name, and whether you like it or not, you’ve probably given Microsoft money at some point or another. That wasn’t always the case, though. Back in the mid-1980s, it wasn’t even clear that Windows was going to hang around that much longer, as Microsoft was working with IBM on an alternative to both Windows and the DOS on which it relied: OS/2….