I mean, that all sounds to me like a really good argument for preserving copies of every single version of every game. To go back to your Shakespeare example, it would be a massive loss if any of those adaptations were not preserved to be found by those who went looking, so all we had to go on was records of people talking about them. In fact, there are at least a few examples of exactly that: Homer’s Illiad and Odyssey are only parts of a much larger series which we only know exist because we have other records discussing it.
Yeah, just taking snapshots of everything isn’t going to let you perfectly recreate the culture surrounding a game at any point in time, but having those snapshots around is important for giving context to other records you have.
Don’t be too excited, these are the same people that made Warcraft 3 reforged, that one remaster that made everything worse.