> You have to wait half a lifetime?!

Yeah, I cannot quite believe the term on that thing. Somewhere between 10 and 20 feels far more reasonable since businesses do need time to work plan around and develop property.

I'm not sure how I feel about auto-reversion as a concept. I can see real problems with it conceptually (creating a deadzone around expiry etc)

How about 14? Which as the article explains was the original copyright term.