Earlier quoted context omitted.
Which is basically never. They have no incentive to do that except for extreme circumstances, and they have all the leverage in the world over game publishers. Delisted games tend to stay in your library for redownload. I never understood the cynicism for digital media, it’s been multiple decades now and the model clearly works. Obviously I prefer zero DRM but it’s also not a hard line requirement for me personally.
Physical media rots too. I don't watch my DVD collection anymore because I don't have access to a working DVD player, but I've read that a lot of those discs don't play anymore because the publishers cheaped out on materials when they minted the discs.
Pressed optical media are fairly durable when stored at reasonable conditions (i.e. indoors in non-maritime climates).