As far as I understand, it is possible for the devs to hand over control over aspects of the game such as the in-game market or the corporation-related contracts to the players via the blockchain. The dev servers would query the blockchain for this information instead of storing it. This allows for potentially massive and breaking changes to the game engine, without players losing any progress they had in the game. Or, potentially, if the dev studio dies for some reason, the community could be given the sources. Or, other games could be developed around EVE which also have access to this blockchain. The possibilities are big. It's similar to how Steam untangled player inventory, market, and mods from the games themselves, but with blockchain, you don't even need Steam to do this.