Comment by johnfernow

It is completely impossible to keep track of DRM-free games being distributed illegally on private trackers that they are not members of, and there are surely tons of private trackers that are not mentioned on the public web that no one at Unity is aware of. Short of spying on the entire world (and processing all that info), it's impossible to keep track of people sharing DRM-free games illegally on USB and hard drives with their friends, or on private folders through Google Drive, Dropbox, etc. accounts.

So unless their anti-fraud system is asking Valve, Microsoft, Sony, Nintendo, Apple, Google, Epic, GOG, itch.io, etc. how many downloads have occurred (no chance that they'll all agree to that), then their system is just going to make a guess, which they'll charge you for, and hope that holds up in court.