It's Square's game, they have every right to take their ball home.
Unfortunately for Square it isn't just one ball... to be quite honest we are the ones holding their balls and they'll have to get them back in order to take them home...
Quite simply modders are like roaches, when the light of law shines on them they scatter and find a new shady place to go about their business... And they're really hard to kill.
The sad truth is that games simply aren't good enough, which is what generally spurs modders into action.
Simply put, Square is waging a pointed, but impossible war. Neither side will ever win... The modders will never make enough impact to beat the corporations and Square will never cause enough attrition to stop the modders.