Yeah, don't have high expectations for things you pay for but don't own. It's a sad truth, but I've accepted it (I also bought some dvds in 2024 which is something I never thought I'd do again).
Not sure about DVDs, but CDs weren't designed to last longer than 10 years. Most of my CD collection has physically rotted. Because I was using Windows Media Player and iTunes, I ripped most of collection in M4A format, which, at the time, was better than MP3. A couple of years ago, I decided that I wanted to re-rip my CD collection (some 200 odd CDs) in FLAC format instead of m4a format (don't ask). And some significant portion (50%?) of the new FLAC rips were missing tracks due to physical read errors on the original CD media.
Not sure about DVDs, but CDs weren't designed to last longer than 10 years. Most of my CD collection has physically rotted. Because I was using Windows Media Player and iTunes, I ripped most of collection in M4A format, which, at the time, was better than MP3. A couple of years ago, I decided that I wanted to re-rip my CD collection (some 200 odd CDs) in FLAC format instead of m4a format (don't ask). And some significant portion (50%?) of the new FLAC rips were missing tracks due to physical read errors on the original CD media.