The gaming market changed when mobile devices became more popular. Almost everyone is using a smartphone all over the world. Everyone has access to the app stores. But due to the limitations of the screen size, graphic power and the battery the using of games reduce possibilities. Also the time of usage is not very high.
Everyone can play
A smartphone is easy to use and persons which had no contact with games and apps before, could easily try and use them easily now.
This is also a big advantage of free to play titles and paid titles. It is fast and free usable and get paid by advertisments. This is the most used mehtod used by developers.
People decide the future
Anyway it is not the question if free-to-play is good or not, it is more a question about how the people use all kind of devices in future.
In my opinion the mobile devices, especially mobile phones, are still essentially part of human life. It will connect all people together. People are social and this will not change in future. Also the kind of the device will not change in nearly future. There are VR or glasses available this will be only a part of it. So this means that this market became more and more important.
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