Enjin is not based on "Enjin" games. It is a decentralized payment system for any developer vs a centralized approach. Savings are estimated 10% for developers--any developer.. plus the ability to create in game tokens with tradeable value and ability to transform after cannot be understated. Your description of closed ecosystem I dont really get... if your saying its not a base protocol layer--OK I get it but enjin is being designed afaik for any game developer to use. Time will tell but Im bullish on this one and I think it has good chance to succeed for non-protocol layer project.