Not that you're paranoid of anything...

LOL. It figures that you're the kind of schizophrenic nutcase who
imagines that he's made major discoveries.

You mean like all the knowledge and wisdom that was lost during The Dark
Ages and the christians' Crusades when they destroyed everything according
to christians' laws? From which we still haven't recovered nor found what
was lost.

E.g.1 There remain hints to important herbal cures once known, but not the
actual cures. I studied herbalism/herbology for over a decade looking for a
cure for something that has no known cure today but there was a cure in the
distant past. I always ran into the christian-created Dark Ages'
brick-wall-of-ignorance in my research, no matter which avenue I used to
try to uncover that knowledge. Time and time again. E.g.2 There remain
hints of the Druids, but no actual writings nor factual information about
their real-life existence. Any books written on them today are just
author's fabrications and speculations, no matter what anyone might claim
to the contrary. (This is why Druids are a favorite of historian authors,
nobody can disprove what an author might conjure up about them.) E.g.3 Etc.

It's not just a matter of storage-media technology, it's a huge matter of
human behavior and values.

In 500 years you could have TWC, "The World Corporation", wipe out access
to all recorded knowledge in order to control you better. In their
corporate wars they might bury the technology needed to read optical-media
by generations 500 years from now (if those generations even still exist).
Creating their laws that their obedient and brainwashed indentured-servants
will carry out for them. That all knowledge be moved to their newly
"patented" muon nano-cube storage system. All previous storage means
destroyed, by law. They then edit out the pertinent parts that they don't
want anyone to know, so that nobody can ever go back and reclaim the
knowledge needed to undermine their self-imposed and self-declared
authority over you. (No different than what christians did just before
their having caused and created The Dark Ages and remain defending their
actions and values to this very day.) The means to reclaim that knowledge
no longer taught in schools, it's now a TWC corporate crime to do so.
Punishable by death. The method to read optical data could disappear in
well under 150 years.

I have a box of 8" dia. floppy-disks in my storage shed (single-sided, 168k
capacity). Do you have a drive, interface card, and the software to read
them? This is from only 30 years ago. Yes, they could be read. But who
still has the proper hardware, cables, and software readily available? Who
is going to go through all that trouble and expense just to see what might
be on all those unmarked floppies to try to reclaim any fading data? Some
genius might have recorded the means to jump through time and space in a
text-file digital journal on one of them. His intentional method of storing
it that way to prevent a presently undeserving populace from having that
knowledge just yet. But who's going to go look for, or even suspect that?
The knowledge now lost forever due to a simple storage-media shift in less
than 40 years. The hardware too difficult to find, too costly a venture,
there's probably nothing interesting on them anyway even if you could
recover the data on them. It's just not worth the bother. Toss them in the
incinerator.

Just as they might do with any old optical media of yours that they might
find in another 50 years. There's too many other things going on to waste
their time on your old CDs and DVDs and hard-drives. It might even be made
illegal to have something like that in your possession. So you blindly
obey, just as you now all blindly obey to all present corporate and
religion invented laws. You've been socially programmed to do so, whether
you want to believe that or not. Toss 'em, burn 'em. There's nothing
interesting on them anyway and you might get in trouble with someone's laws
for even wanting to see what's on them.

The actual storage-media and method used is just a tiny fraction of the
real problem.

I honestly doubt that any civilization 500 years from now would be
prevented from reading a crude optical disk because specific players
weren't available.

lol, never thought of that.
The problem would be that in a couple generations the
optical drives will be obsolete to quantum drives or
whatever the new technology woil be.

I see, and if after say 5 or 6 hundred years the thing becomes non
readable, do I get a refund.

Supposed to last for 1000 years. Instead of an organic dye, they have some
mineral, and they need a special burner, that costs $5000. If you want to
send the data to the company, it costs 30 euros for a DVD (4.7 GB, of
course). Full story here, only in german:
http://www.spiegel.de/netzwelt/gadgets/0,1518,661479,00.html