I've thought about it too many times. But I don't see how we can stop an ICO scam. From the little that depends on us and unfortunately we have nothing we can do about this reality.
Of course, we can stop them from creating one after the other, by not investing and supporting them anymore, they can and will create more because people are still supporting them, and as long as there are investors who keep supporting this ICO, there are scam ICO coming in to scam those who cannot and will not do research on these projects.