You say that as if the abusive ones are only a subset of the scam, but I think they are the only ones that are actually a scam: lying/misleading about it actually being a winnable contest. Otherwise, it is not a scam. Either you think the chance of winning is worth the time and effort to enter, or you don't enter. It is pretty simple, short of suggesting most artists are too stupid to decide for themselves on something like that.
"The abusive ones never pay out at all..."
You say that as if the abusive ones are only a subset of the scam, but I think they are the only ones that are actually a scam: lying/misleading about it actually being a winnable contest. Otherwise, it is not a scam. Either you think the chance of winning is worth the time and effort to enter, or you don't enter. It is pretty simple, short of suggesting most artists are too stupid to decide for themselves on something like that.