The market for lemons argument (https://en.wikipedia.org/wiki/The_Market_for_Lemons) suggests this is not true. When a sufficiently large percentage of the market is fraudulent (and in the ICO space it's damn close to 100%), buyers will demand a price premium to compensate for their risk to the point where honest actors can't participate profitably. That isn't happening yet because we're still in the tulip mania phase, but eventually people will want such high returns for the absurd amount of risk in the crypto space that no one will bother.