Pah it is the GIMP used base that suffers :)
Yeah making money off someone else's work without transacting with them is just plain wrong.
4 years hmm, I would prefer to see all the monies confiscated and given to Adobe, plus court costs, just make this activity unprofitable, don't stick them in jail, that just costs.
Jail should really be reserved for violent actions outside the ring, anything else just get the money back and charge costs for it. Jail is not a deterrent for white collar crime, it is motivated by money, to take the motivation away just fine and confiscate the monies.