Of course they are.... But what are the options Mexico has, other than continuing to give Disney extensions. The merger is complete. They can't "un-own" the Fox Sports Properties. Until someone steps up and is willing to pay Disney a market price, then there is little or anything they can do.
Think about it from a potential buyers prospective. You are going to buy this property, and go up against Disney and Televisa, and must guarrantee as good or better access to the sports properties at the same costs, as Fox Disney has them today. How do you justify that purchase? Disney should consider free access to the Fox Sports events (or near free) to maximize access, and the issue will go away.