I think the biggest problem with the information-as-property model is that it only works if its vigorously enforced world-wide. There's little or no room for even a single country to experiment with a copyright-free system. They'll be pounded into submission with the threat of trade tariffs. Even "communist" states like North Korea have signed up to the copyright system.

I think this also leaves the system somewhat unstable; all it needs is a rogue government in some place like Iceland and the likes of sci—hub and pirate bay will have a safe haven. If one country gets away with it, others would probably jump on the bandwagon, because they have little to gain by sending money to rich countries for information they could download for free.