It reminds me how theoretically, professional pitchers and professional batters both train so hard that their skill levels end up cancelling out. The number of hits and strikes should average out to around the same as an amateur matchup.
In other sports this doesn't hold in the same way: e.g. amateur soccer games tend to be higher scoring than at the professional level, because defence improves more with training than attacking does.
That said, fields where adversarial generative methods are useful have an inbuilt damping effect where gains on one side tend to cancel out gains on the other.