Its possible 95% of people who download all these free software will never have a completed game.
I mean thats just human nature, to be curious about something thats new, innovative and free. I bet there are lots of 13 year old kids downloading thing to play around with it aswell. Just to see it and use it for the first time out of curiosity.
Plus there is the factor of most people not being able to commit to something. 95% of people who go on a diet never actually go all the way and get slim and trim if you know what I mean.
But the idea that they put forward that your game in UE4 will not make more money than Unity 4 free is a bit strange. I do agree some of the best selling games were never about graphics I will give them that. But I mean isn’t blueprints etc more than enough to justify using UE4 over UT5? In theory you could build almost any kind of game using blueprints and not even knowing how to program.