At least with revenue share the amount you owe is bounded by the revenue you've realized from sales.
No abuse needed to lose money with this, I’ve probably installed the same games 20+ times over the years.
Does a reinstall of an app on the same device count towards the Unity Runtime Fee?
No, we are not going to charge a fee for reinstalls.
I agree what they are saying isn't workable, but that idea of install based fee could work, and would be better than a royalty for many.
This is the issue.