A real artist creates art for art's sake and/or because they enjoy the process, or they just find it therapeutic - not just to make a quick buck. So by extension, real artists ought to be prepared to work for free, (at least some of the time.) And, by further extension, they shouldn't be over concerned when their work gets pirated.
More feathers to their caps!
And if they can't make enough money selling their art, they can always go out and get a real job!