There is so much of this going around these days.

https://news.ycombinator.com/item?id=39308520

Take-Two shutting down servers for games when users still have unused “in game currencies”.

I love the top comment, they point out if the currency is fictional there should be no problem with mods to add currency. "But we lose our money then!" - they cry...thought it wasn't money though, lol.

So someone hacking them and adding more currency to everyone would not be bad. Just very tiny breaking of rules. Not likely worth prosecuting at all. As in that case they would lose absolutely no money...