I mean, we write all these violent psychopaths, but they all spend their time focussed on their jobs. We know that there's a Department of Internal Affairs, and we know they've been expanding recently - but we don't have much information as to why. There must be agents being locked up to necessitate the existence of a jail, right?

So what could you do, with access to all the multiverse's Stuff(TM)? Political power in your home universe? If you could get a Sue to serve you and use their reality-warping powers on important people, you could pull it off (think of whichever Thursday Next book it was that happened in). Selling addictive drugs? I'm sure something in a Sue's body must qualify.

And if you go outside the realm of strictly Sue exploitation, you've got Morgan's little breakdown, or even something as simple as mass-producing invisible yarn. So maybe it's best to stay focussed on your original question...

As Cassie said, exploiting the stuff we're here to oppose would get you punished - if you were caught. So the trick is not to get caught...

hS

Also, who are you? Just in case you're a newbie, have some extra-buttery popcorn!

At one point the entire PPC was doing that, under the leadership of the Mysterious Somebody. Materials harvested from Suefics were being sold to canon worlds to create revenue for the PPC. Given what else was going on and linked to it (see: The Reorganisation), it shouldn't come as a surprise that all such things were eventually clamped down on with extreme prejudice. Anyone caught doing such things now would likely be severely punished.