Or maybe 100 years from now, your toaster will be powerful enough to run the game.

To me this is about both preserving the access to what consumers purchased, but also future preservation of art.

Copyright is not a natural right. It is a monopoly granted by the government to creators, specifically with the goal of the progress of art and science.

Games that completely die because their servers are shut off, in my opinion should just lose copyright outright. Why should the people via the government provide you with a monopoly on publishing something that you have stopped publishing?