It's not even hundreds of millions. It's tens of billions of dollars if we suppose someone actually have access to these wallets.
Bitcoins across old unused wallets worth $30B to $80B depend of how you count it.
Bitcoins across old unused wallets worth $30B to $80B depend of how you count it.
It's worth considerably less if you make any attempt to count it accurately. The market capitalization reflects the fact that old unused wallets are unused. If they stopped being unused, market capitalization would drop.
If the system does crash, nothing of value would be lost. And we would be rid of ransomware.