TIL Circuit City created a proprietary disposable type of DVD called a DIVX that was viewable for only 48 hours after initial viewing unless an additional fee was paid. Which led to bankruptcy
This reminds me of Flexplay, which was a DVD that had a coating which made the disk unreadable after 48 hours. Technology Connections did a wonderful video about it.
I used to put them in a plastic baggie, push all the air out, then stick it in the freezer. It seemed to halt the process long enough to give it to a friend and allow them watch it after the 48 hour period.
These disks were designed to self-destruct in the presence of oxygen. They literally rust away.
Oxygen and its O2 form does like to sneak into everything. Even sealed in the original packaging, there's a limited shelf life. Flexplay claimed stability of only one year, which isn't much given it comes sealed in a plastic bag.