Microsoft on attacking the counterfeiting of MS-DOS ..

Date: 1991

Snippet
From: Jeff Alder Date: September 4, 1991

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In order to attack the counterfeiting of MS-DOS and increase the penetration in the naked PC market. THIN-DOS will be introduced in early November ..

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BENEFITS

A competitive defense against DR_DOS provided by 2-3 year license agreements

A substantial decrease in the profit incentive and oppurtunities for counterfeiters

Full Exhibit
http://boycottnovell.com/wp-content/uploads/2009/06/px09834.pdf