<P> On February 25, 1989, Jones purchased the Cowboys from H.R. "Bum" Bright for $140 million . Soon after the purchase, he fired longtime coach Tom Landry, to that point the only coach in the team's history, in favor of his old teammate at Arkansas, Jimmy Johnson . A few months later, he fired longtime general manager Tex Schramm, and assumed complete control over football matters . </P> <P> After a slow start under Jones and Johnson (the first season under Jones, a 1--15 finish, remains second only to the team's inaugural season in terms of futility), Jones quickly built a team that is often reckoned to be the best NFL franchise of the 1990s . The Cowboys won the Super Bowl in the 1992 and 1993 seasons . Johnson then departed and was replaced by Barry Switzer . During Switzer's tenure, the Cowboys also won the Super Bowl in the 1995 season . </P> <P> At the time of the sale, the financially troubled Bright claimed to be losing $1 million per month on the franchise . During Jones' tenure, the Cowboys have appreciated in value to an estimated $4.2 billion, turning their owner into a billionaire in the process . Much of the league's financial success since 1989 has been credited to Jones himself . In particular, he was decisive in securing Fox as the NFC's primary broadcaster at a time when the traditional "Big Three" networks were trying to convince the league into accepting a rollback in television rights fees . Increased television revenues have played a decisive role in securing the NFL's place as the world's richest sports league, with revenues of well over $10 billion per season . </P> <P> The 2017 NFL season is Jones' 29th as Cowboys owner - the same number of seasons as the combined tenures of his predecessors . </P>

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