... operating system, or OS, called MS-DOS, for its new line of computers. Microsoft bought MS-DOS from Seattle Computer, even though Seattle Computer was accused of stealing source code from another OS, called CP/M, written by Digital Research. Though CP/M was considered by most to be superior to MS-DOS, Digital Research could do nothing considering IBM made sure that all programs for the IBM PC were only compatible with MS-DOS.1 As Microsoft continued to dominate in the OS area, they found ways to make it so that their product was the standard. In 1991, Microsoft required all manufacturers installing MS-DOS on any computer to pay a licensing fee for every machine sold, whether they installed MS-DOS or not.2 Manufacturers would not pay extra money for a different OS because they already had to pay for MS-DOS. When Microsoft developed Windows, their influence became even greater. Microsoft's eagerness to spend ...

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