You can own assets on centralized gaming platforms. Such platforms have existed for years. Some even have internal markets for in-game assets and internal currencies used in trading such assets. Hive is essentially a such platform with the only and major difference being that Hive is decentralized and there is no central entity in total control of the assets that can arbitrarily change the rules at any time. A gamer whose assets are in his or her Hive wallet can be sure that even if the corporation that developed the game goes bust, another one can easily take over and pick up from where the other left off because the assets are actually controlled by the players. Everything is open source and no single party has dictatorial control over anything. It will be much easier to build open gaming ecosystems than in the siloed centralized world of gaming where everything proprietary and nothing tends to be interoperable.