Most people don't understand the marketing deal that Jones has with the NFL. In the NFL you share the profits from all of your merchandise sales with the entire league. For example: Let's say that the Houston Texans have the hottest selling jersey in the NFL and they are outselling every other jersey in the league by 2 to 1. Well sorry for you, Houston. Your franchise doesn't make a nickel more for their merchandise sales than the Jaguars do. ALL merchandise sales are split equally between all 32 teams. This is a good deal for teams in small markets that don't generate the same revenue as their big market counterparts. Not so good for a team "that's hot", right now.
What Jones negotiated was unique in the sense that he still "owes his share" of the league average in merchandise sales that are distributed evenly but he keeps above and beyond that average. The catch is that if Dallas Cowboys merchandise sales are actually LOWER than what the Jones' owe, then they have to pay the difference and, in effect, lose money. Jones (being the savvy businessman he is) negotiated this deal when the Dallas Cowboys weren't exactly the hottest ticket in town. He knew that it would only be a matter of time before he WAS the hottest ticket in town. He negotiated to take control of the sales, marketing, and distribution of his own brand in exchange for his "fair share" of revenue sharing regardless of actual team sales. With the control came the risk of actually losing money. The Jones' were fully prepared to do that even in the short term knowing that, at some point, Cowboys merchandise sales would eventually explode. Now, the Cowboys have rarely had a problem selling merchandise so Jones' bet was pretty low risk, which made his deal with the NFL genius.
The down side is that, for some fans, they don't have access to Cowboys merchandise through some of the same streams as fans of the other 31 teams in the NFL. FWIW, I've never had a problem getting whatever Cowboys merchandise I wanted with the current deal in place.