The main problem is play to earn game pretty similar like a ponzi game where the early you join the more profit you get.
This is main problem when dealing with the play to earn game
And just because it's free, its also mean that is trusted already? I think that's a bad approach. We may not lose money but we can lose our precious time. If only we will be using that time into something which is really worth it, we can feel much better and maybe we can earn some cash. Many people play axie as a scholar where they didn't spend any penny but they are now complaining and leaving the game due to the cheap value of the token.