For my part, I think you’re right, and that it’s unlikely to fail in at least the USA, and, after consideration of what you wrote, that if it did fail in any me

For my part, I think you’re right, and that it’s unlikely to fail in at least the USA, and, after consideration of what you wrote, that if it did fail in any meaningful way it would push things in the direction of copyright pools (like patent pools); but at the very least, it would be a massive disruption which would take some time to be sorted out and require a certain degree of starting from scratch in data sets; and all up it’d probably favour big business even more heavily than the current informal consensus. I think there’s also a fair chance in such a situation that European countries with their different approach to copyright philosophy would act as a balancing force, striking down overly-general copyright-assignment-equivalent clauses in terms of service and the likes, which would be the only real way of sucking up as much everything as these models need to work well, especially for providing retroactive relicensing (to avoid a big hole in their sources).