IRL murder is illegal, in Worm murder is illegal. Why? Because murder is morally/ethically wrong and disruptive to society.
IRL profiting from crime is illegal. Why? It isn't just because the profits gained from crimes are considered illegally obtained/damages of the crimes committed. That would fall under moral/ethical wrongness and disruption of society. It's because crime is morally/ethically wrong and disruptive to society so it cannot be incentivized in any way. You may not keep the money you mugged a man for, you may not keep the insurance money you killed for, you may not keep the money given to you by your drug-dealing financial supporter, and you may not loot criminals because that incentivizes criminality. Not because it always benefits a criminal, but because Crime is not allowed to pay, and you've just turned a profit from somebody committing a crime. On top of that, that money you took is evidence and/or forfeited to the state because it is either illegally obtained or damages of the crimes committed. There is a reason criminal organizations launder their money.