GameRager: ]There should be a clause or addition to copyright law to prevent IP sitting like this. If an IP isn't used every so many years by ALL owners then it becomes public domain or put up for sale to the highest bidder.
It would be nice, but things are too complicated to do that. If I write a song that gets used in a movie and later in a game, why should I not get royalties for that while I live?
The real problem is that other forms of media (music, movies, books) tend to get re-released as technology upgrades. Software tends to get abandoned (hence the abandonware moniker) and the technology tends to upgrade quickly (how soon until 128-bit computers make 32-bit obsolete?).
Granted, I think that if all of the IP for a work is owned by a company/corporation (as opposed to individuals) they should get 10 years initially and are allowed 5 year extensions. When time runs out and hasn't been extended, the IP becomes public domain.
Something like that... software is just a different beast really... it needs different rules.
And I wholly agree about them just wanting to sit on the ownership until someone gives them a deal they want so they can just make money with no effort. Someone should buy it and make a crap, crap game with that company's name plastered all over it. :)