The only people that are going to be working on it in the first place are fans of the game. There is no incentive for the original copyright holder to contribute code for a planned rerelease, when they can just hire a studio like bluepoint to reverse engineer their game, letting them keep it closed source to begin with. Regardless, game assets are also not freed or open sourced from their proprietary license by reverse engineering the game code. The rights still belong to the original copyright holder, most likely the publisher. This means that only they can share or sell a complete copy of the game, no one else. So they can take the community's hard work for free, and enhance and port it to modern systems closed source all over again. Even worse is if the community already did some of these updates. Now the community is back to square one with none of the benefits, let alone profits. You couldn't be a bigger cuck doing this if you tried.