Disagree on the decade. There are plenty of examples of great movies or other works that took longer than a decade to bring to the public. Those projects would have been completely non-viable if their content could have been stolen after creators put a decade into their development.

I think 25 or even 50 years is more defensible. But 100? Nah.

But the crushing problem today for many of us here is SOFTWARE PATENTS. These should never have been allowed in the first place; and until their scourge is abolished, everyone is at risk for having his work stolen with one.