The history of MS-DOS can actually provide a window into this phenomenon.

For users of MS-DOS computers I visit the following CompuServe forums regularly:

So I hired the proprietor to customize Edward for me in MS-DOS.

The following command lists the subproducts that make up the MS-DOS utilities product:

The rest is about practical applications of MS-DOS based personal computers.

Internet MS-DOS archive managers use it to announce new additions to their collections.

Google's Android Eclipses Apple to Become the MS-DOS of Our Time

Caldera sells Linux software and DR-DOS, an alternative to Microsoft's MS-DOS.

This feature is only available for callers with an MS-DOS computers.

If you ever get this problem, and have an MS-DOS computer, try it.

I recall playing Prince of Persia in primary school, on MS-DOS.

Those running on MS-DOS computers, have more programs for such computers.

Typed into MS-DOS Editor under Windows XP, using 7-bit characters only.

Utility programs for MS-DOS computers are stored in directory 10.

In many ways, the Microsoft empire was built on MS-DOS.

The communications directory holds programs that let MS-DOS users connect directly with UUCP sites.