There are many free to play games out there, however in app purchases are going to be there, and they are going to be there a lot. The only game thats far away from p2w, is free, and is big, is league. And thats it, maybe dota although only played a few times.
I play a mix of both, i personally dont care if a game is free or paid, as long as i have a good time its a good game for me.