That's pretty much the only thing that matters. there is a huge difference whether they make $0.5, $1 or $2 etc (and especially how much more do they make per user in a "rich" country since Unity seems to think that they are worth up to 10x more than everyone else.
> Plenty of games are profitable at scale with only a few pennies per user.
Beyond a certain point (over 1 mill users) it will only cost $0.01 per install. So this will affect 1-5 dev/worker studios with very low revenue per user. They could still probably just pay ~2k for Unity Pro per seat and stay under the 1 million revenue threshold.
To me it almost seems that the '$0.20 per install' is only there to encourage developers to upgrade to pro if they have more than a few hundred k. users.
> If it was instead a %
True, I'm not arguing that wouldn't be more fair. It would be quite expensive to enforce and close to impossible in certain cases. So I understand why Unity chose to do this instead.