Museums do have to touch up their artifacts though. Sunlight, oxidation, damage from being manipulated and must choose how to manage preservation vs preserving the integrity of the original. Restoring a game to working would be a radical option and one Im not sure I would personally agree with. The implication behind it is that games lose their "gameness" if they don't work but this will need reevaluation when none of these carts work in 50 or so years. Better to get used to them as simply historical now so it isn't so weird in a few decades. And besides we'll still have game-games and emulators. That said, I see this debate as a healthy and important one to have.