I think the more pressing issue is the medium degrading before the playback hardware. Disks have an average lifespan of 25 years. I surmise basic bluray hardware will last much longer.
The laser diode would probably be the first thing to fail in the player, and it likely wouldn't take 25 years if it was being used regularly.
The laser diode would probably be the first thing to fail in the player, and it likely wouldn't take 25 years if it was being used regularly.