Microsoft's primary competitors, Apple and IBM, both have competing operating systems with a great deal of marketing to accompany them; however, both suffer from weaknesses that Microsoft has been able to exploit. Apple's operating system for its Macintosh line of computers, while superior in many ways to DOS and Windows, is limited to the Macintosh personal computers; therefore, it doesn't run many of the popular business applications that are readily available to DOS and Windows. To an extent, IBM's OS/2 operating system suffers from the same problem. While it will run on all of the personal computers DOS and Windows can run on and even handle Windows applications, the number of programs produced for OS/2 in its native environment is very small. This is the type of detailed analysis you need in analyzing an industry.


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