If I see a project that got money from scam that is more important than damaging impact of scam, I'll praise it.
He stole X money and done X damage to a society. Now he is doing business, and nobody is checking him, because its his money. He got money for free, has no penalty if he loses second time. His motivation is low because he doesn't care much, he got the money easily.
Now lets imagine another person who made the same business first guy does in a second case, but in this guy seeks for an investor. Investor rejects him if project is bad, or gives money if project is good (+% to success because of investor filter). Person now has an obligation (for investor) and he also spends his own money that he earned and person has strong a incentive to not to lose (+motivation, +% to success)