The difference is, that one was (and still is) a widely established product and the other is in prototype stage since decades.
The difference is, that one was (and still is) a widely established product and the other is in prototype stage since decades.
Yeah, but standard DVDs and CDs degrade in less than the stated 100 years.
Yeah, that's why M-discs were created. Which only displaces the question to "will there still be drives to read them?"...