A good number of those franchises would be neat, but it looks like its just the rights to publish certain games on their original platform. For instance 'Ecco the Dolphin' is a property of Sega, not Acclaim, yet its up their for sale.
The more I look at this topic the more I think, potential potential potential. I have a few questions that I will need to find out. Like, is the buyer given the source code for the game or just an image? Can you port the game to another platform? If you can, then porting some of those 2d and even 3d titles to a cellular phone platform is the way to go. Cell phone games are bringing in bank for those companies.
You don't get/own anything except the rights to publish *that* game, if you wanted to port the game you would have to go into a deal with the license/copyright/IP owner, and most likely have to pay the full developmental cost. You only stand to make any money by re-selling the rights, or if someone decides they want to re-release the game on the console it was originally on.