It's hard to evaluate whether that's a good or bad thing. It'd be good if the victims got their files back. So you want to keep the server up. But this kind of

It's hard to evaluate whether that's a good or bad thing. It'd be good if the victims got their files back. So you want to keep the server up. But this kind of scam must be stopped. So you want to kill the server quickly so scammers understand the scheme is unlikely to be profitable. Unfortunately the economics probably work out the same way spam does, meaning it won't go away. All it takes is a couple people to pay up to make it profitable, because the criminal doesn't bear the cost of distribution.