I am a direct TV subscriber and I will probably continue to get the baseball package along with the basketball package and the football package. However, anyone that think that this deal is beneficial for them other than Direct TV employees must be smokin' some strong hashish.
If there is only one source providing the package, there are less limits on the amount that can be charged for the package. There is also less incentive to get more games on HD any quicker. Plus with the huge exclusive rights deal, Direct TV will likely choose to raise their prices to recoup their costs.
Whether it is right or legal is an entirely different question. Congress could definitely write a law to outlaw these types of exclusive rights deals. if they wrote such a law, it would become illegal. Perhaps anyone here that is complaining should write their congressman and try and get a law that restricts such deals.
By the way Greg, monopoly laws are not concerned with exclusive rights. As you correctly pointed out, CBS has exclusive rights to broadcast the Super Bowl. Similarly, all patents and copyrights give the holder an exclusive right to sell a product. So, it is clear that the law is not looking to restrict all exclusive rights, it actually encourages many (most?) exclusive rights. However, it is possible that the law could be interpreted to include the exclusive distribution rights of these packages.
Nevertheless, I would recommend a new narrowly tailored law that addresses this issue if someone chooses to go after these exclusive deals. I guess it is possible that Congress or the Courts could hold the anti-trust exemption over the heads of MLB in trying to prevent them from entering into such an exclusive agreement. However, I would guess that that would be unlikely.