Children aren't smart, this much is known. This is fighting the symptom, not the cause. The real issue is that children who can't spend their money responsibly shouldn't have that money in the first place. If we go by the assumption that a child won't know when they're paying for a legitimate product or being exploited then why give them any money? If they don't spend it on a pay-to-win server then they'll spend it somewhere else and be "exploited" just as much, possibly on an iPhone game or something. If I give my child $1000 and they blow it on a Minecraft server then that's my fault for giving them that much money, not theirs. Children shouldn't be given that much disposable income if they can't use it properly. Punishing server hosts for the mistakes of poor parenting is not the right solution.
As chc said, I wouldn't apply the same reasoning to elderly people. Also, the issue that most people were bringing up was that children specifically were being exploited, so the point is moot.
