[Tzunamitom]

Depends how you define value... Arguably the knowledge that e=mc^2 is far more valuable, and contained within much less data.

[perfmode]

Does secrecy matter?

There was a period in history where this claim was certainly true. Now, not so much.

Information of this nature loses value when revealed.

That private key holds value until it becomes public. Then, the wallet is plundered and its value falls to nought.