By: MARC William H. Gates III and His Giant Bill Gates, cofounder of the Microsoft corporation, holds 30.7 percent of its stock making him one of the richest people in the United States. He was the marketing and sales strategist behind many of Microsoft's software deals. Their software became the industry standard in the early 1980s and has just increased in distribution as the company has grown, so much that the Federal government is suggesting that Microsoft has violated Sherman and Clayton antitrust acts. Bill Gates' first interest in computers began at Lakeside, a private school in Seattle that Gates attend