keeveek: Doom IP was bought entirely, so it's obvious there is no limited avaibility.
I think you don't really understand everything here. Long story short: Dune games will NEVER be released again, because IP owners are douchebags. I mean DUNE IP owners, not people who created the game. Dune, as, you know, books and the world.
The same for example is with Discworld games. Pratchett family or whoever governs that shit are a bunch of dicks and they never let those games to be re-released.
Tolkien family is no better.
You giving an example of Doom games or Apogee games are showing you don't understand the difference.
I'm pretty sure you are lost as to whom own what when it comes to third part development and games. If you create an IP that becomes famous the world over and allow another company to make a game out of it, you may or may not own the rights to the game. It depends on the contract you make with said company. If you do not specifically stipulate that said company retain no rights to the game after a certain amount of time, then they own that game. They created it, published it, and copy protected their work. It may be based on your IP, but you let them do that. They can then sell that game as long as they want, as often as they want and in anyway they want. Its theirs at that point. Also unless you specifically limited their ability, they can make sequels to said game.
All one has to do is look up the rights to Max Headroom to see a great example of copyrights gone out of control. There are holders of that IP that each claim total ownership but in reality one had the rights to books. Another had the rights to do a game (and therefore claimed digital rights), another had the rights to do a comic, and another claimed the rights to music (and also claimed that enabled digital rights), then there was the TV and movie rights which are all over the board. Nobody can figure out who owns the IP. So the only reason very little has been done with the IP over the past two decades is the constant lawsuits that get flung everywhere. Yet some things have been done like the DVD release about two years ago. That lawsuit is still pending (from last I heard), but the publishers are claiming they bought the original broadcast copies and therefore are entitled to resell it as they are the owners of said material.
Same thing with a lot of older games. But nine times out of ten, older games do sell well many years into the future so you will not find a lot of publishers willing to go through the effort to continue selling them. I'd be willing to bet thats the main reason you don't see the old Dune titles still for sale. EA and Titus own the games they published (EA buying Westwood Studios, and Titus buying Cryo and Virgin Interactive), so they can do what they want. Not to mention, Titus may be bankrupt in the next year or two if their sales keep dropping so they have other matters to contend with and EA is seems very reluctant to offer up their classics on GOG. They keep trying to get people to use their Origin service and see other digital download services more as competition. Look how they treated Steam before they ever offered any of their older titles to GOG.