The important difference is that Nintendo has no incentive to implement interpretations of items from Activision. Since it is dependent on Nintendo implementing

The important difference is that Nintendo has no incentive to implement interpretations of items from Activision. Since it is dependent on Nintendo implementing each item, even if it were a decentralized network, the utility of it is not so secretly still centralized to nintendo only activating the meaning of items for their own content. An incredibly inefficient method.