I know a few amount of this companies. For example Yumerium and EOT. And I really hope that this project will be successful and change our game world in a good way. Because blockchain helps us to
protect our private information and make transactions with game coins faster. What are you feeling about it?
They will be successful if their project is good and useful. it doesnt have to be blockchain powered to protect just have a strong security about the user information or simply dont collect any information so no breach will happen. email is disposable just get a new one and it isnt a problem if your information got exposed what will they gonna do about your email? spam messages?.