For those who have watched the video, it’s worth highlighting the three ‘benefits’ of blockchain (9m 15s into the video). “Ownership”, “provenance” and “digital markets”
Ownership? We have that already. You own your stuff. There’s nothing magical about it, and the current system works. In theory blockchain could enforce it in such a way that it would eliminate duping but as such it’s just a massively overengineered way of doing object IDs. Object IDs are an obvious solution but would be very disruptive and have not happened. Blockchain would be much much worse.
Provenance? This is things like unique assets (the example in the video is a physical baseball!). But these make no sense for most games. Assets once created can be infinitely cloned. Developers might want items to be exclusive and limited, but this normally means they are still available to thousands of players. In a game like ROTMG with two dozen servers, dozens of realms, containing hundreds of dungeons, adding content that can only be used by one player makes no sense as almost no-one would see it.
Digital markets? We have in-game trading. We have trading outside the game on RWT sites. All blockchain would do is make the latter easier. You would no longer need to e.g. paypal an anonymous website and trust they deliver the goods to you. It could all happen automatically (except for the normal delays associated with blockchain implementations). Somehow think DECA will not want to be helping facilitate RWT like that.
The actual example in the video is worse: buying and selling accounts (look at this guy selling WoW accounts, isn’t that a good way to make money!). Yes, that would be much easier if accounts were built on the blockchain. Somehow though I doubt DECA will want it added to ROTMG.