Malcom \"Mal\" Reynolds wrote:

Technically, owners are not responsible for anything. There's no
law that compels copyright owners to do any specific thing.

Of course they are.

Laws generally *don't* describe or define things that you *must* do.

The generally describe or define things you can be criminally charged
for (ie - things you *shouldn't* do). Laws can also define your rights.

Copyright law defines certain rights. It does not define or describe
obligations that the copyright holder is "burdened" with.

It is their responsibility to protect their copyright.

It is their *right* to protect their copyright. Nothing in law gives
them any responsibility to do anything.

If they allow you to violate their copyright, they may in fact
forfeit their copyright.

I don't know if you can ever "forfeit" your copyright rights through
non-action, but the courts can never know when a copyright holder knows
that their copyrights are being violated. Your theory here sounds very
implausible.