In the present context, I'm reminded of IBM's "OS/2 for Windows", which, while actually a reduced-price version of OS/2 2.1 that used a customer's existing copy of Windows 3.1 to avoid the cost of licensing the Windows 3.1 components IBM shipped with OS/2 to support Windows compatibility, was also a marketing ploy to reposition OS/2 as a Windows enhancement rather than a replacement OS (which, to be fair, is not as misleading as it may sound, since OS/2 2.1, unlike Windows 3.1, is capable of memory protection and preemptive multitasking between Windows applications).