Well that's not the issue that you haven't had a problem in x years with labeling said cd/dvd with a sharpie. (x being a single digit number)
The issue is that the longevity is compromised, no matter what manufacturer created it. We're mostly talking 10-20 years or longer. I know I've seen some cdr's advertised that last over 200 years. The problem is, they last that long in a very isolated environment. When you bring sharpies, weird bacteria that think cdr's are yummy, and other items that accelerate degradation into play, you end up with a much smaller figure.
for the record
The issue is that the longevity is compromised, no matter what manufacturer created it. We're mostly talking 10-20 years or longer. I know I've seen some cdr's advertised that last over 200 years. The problem is, they last that long in a very isolated environment. When you bring sharpies, weird bacteria that think cdr's are yummy, and other items that accelerate degradation into play, you end up with a much smaller figure.