That's wild. Anything with non-deterministic output will have this.
Anything with non-deterministic output that charges money ...
Edit Added words to clarify what I meant.
Brain scans have revealed that waiting for a potential win stimulates the same areas as the win itself. That's the "appeal" of gambling. Your brain literally feels like it's winning while waiting because it _might_ win.
That's still not gambling and it's silly to pretend it is. It feels like gambling but that's it.
You only lose those rights in the contracts you sign (which, in terms of GPT, you've likely clicked through a T&C which waves all right to dispute or reclaim payment).
If you ask an artist to draw a picture and decide it's crap, you can refuse to take it and to pay for it. They won't be too happy about it, but they'll own the picture and can sell it on the market.
Maybe art is special, but there are other professions where someone can invest heaps of time and effort without delivering the expected result. A trial attorney, treasure hunter, oil prospector, app developer. All require payment for hours of service, regardless of outcome.
When it comes to work that requires craftmanship it's pretty common to be able to not pay them if they do a poor job. It may cost you more than you paid them to fix their mistake, but you can generally reclaim your money you paid them if the work they did was egregiously poor.