That part is already solved. Under current international law, if you commission a work then you own the economic rights, but the original author retains the moral rights. In fact, selling your moral rights is not possible.
It sounds like the suggestion is that retracting / completely discontinuing a book should only be part of the moral rights, not the economic rights.
I'm not sure how feasible that is, but it's not totally unprecedented. For example, one of the moral rights recognized by many countries is the right not to have your works destroyed. E.g. even if someone else owns the physical object of your painting, they are not allowed to set it on fire, and you could sue them if they did.
It sounds like the suggestion is that retracting / completely discontinuing a book should only be part of the moral rights, not the economic rights.
I'm not sure how feasible that is, but it's not totally unprecedented. For example, one of the moral rights recognized by many countries is the right not to have your works destroyed. E.g. even if someone else owns the physical object of your painting, they are not allowed to set it on fire, and you could sue them if they did.