I agree with this. It would be nice to have a reduced grace period for books before they're public domain - something like 40 years seems reasonable to me.
I think I like that idea more. My lean to 40 years is just to satisfy the needs of some academic IPs. I suppose it wouldn't be difficult to categorise IP duration though
I think the applications could be protectable, not the pure academic research. If there is no clear practical benefit in 10 years, do not prevent others from working on those findings to try for something more practical.
To me, 5-7 years seems reasonable for technology inventions (patents), 7-10 years for books and other art.