This is going to be one of the reasons why CD collecting (whether it's games, music or otherwise) will likely stall. Even games which have been kept in perfect

This is going to be one of the reasons why CD collecting (whether it's games, music or otherwise) will likely stall. Even games which have been kept in perfect condition can suffer from rot as a result of poor quality control. Cartridges are generally more hardened unless they contain some battery-based saving system and even then a dead battery can be replaced.