I thought the same thing. Recently I was in on a discussion about longevity of various data storage methods such as tape, CD, DVD, etc. None were predicted to last two thousand years. May have to rethink.
Actually, the market for scrolls dried up after Yadin seized a large scroll from a dealer as "national property", and didn't pay for it. (The dealer later settled for $100,000).
But after that, people stopped bringing in finds, fearing they would just be confiscated, or they would have to turn them over without payment.
THAT, and not the lack of scrolls, caused nothing to turn up for the last thirty years or so.
(At least two scrolls are known to be being kept in safety deposit boxes; they would be worth a mint, and only gain in value over the years; but until there is a certainty that they can be sold on the international, and won't be confiscated as "art" or "archaeological treasures", they are likely to remain in the banks.)
That's why I kept my 4 track player. When everyone else is worried about Y10K, I'll be listening to the smooth sounds of Barry Manilow singing "I write the songs"