All of the games are built on the same foundation, with the exception of skin colour and weapon design. High game entry fees and a high learning curve for new users are discouraging new users from joining the system. Because of the unique teams they have, only early adopters are making a lot of money. The number of unique users registering each day is decreasing, indicating that the hype is fading.
Actually its depand on game developers if they only focus on earning then this system will decrease players growth day by day. But i think if developer not only focus on earning and focus on gane development also bring player interests on game then it will not happen. But some of game developers trying hard to bring most unique game in the field i know lots of them working in development for 2-3 years but still they not launch any play 2 earn product on market!!