I think restoring copyright to sane periods is a better solution, resale of digital goods requires online DRM systems to continue functioning indefinitely and we’ve seen the issues that causes.

I would be less annoyed by essentially consumable digital goods if I knew sometime down the road they would enter the public domain in a reasonable timeframe, and not well after the eventual death of the current generation of children.

I shudder to say this, but that might actually be a use case for blockchain. A shared distributed ledger that an ebook reader consults before opening an ebook.

Yeah the "don't let people sell used books twice" problem maps pretty well to the "prevent double spend" problem that blockchains (try to) solve.