[Daedren]

I think when most people are, in this context, talking about the "retroactive" part, it's about if it will affect existing games. The pricing structure will be applicable to everyone starting next year.

The other issue is how they measure "installs", as it has been a constant problem in the mobile community for years on end (a problem especially affecting the ad industry as you may imagine). I personally don't see how they will accurately measure the cases mentioned in the tweet without forcing everyone to have some authentication.