The only way to stop scammer is to stop investing to ICO who do you think is scam and for sure once that happen scammer will be lazy to create ICO. Before investing make sure you will do make some research to know if the ICO is scam or not.
True, but when most coins are scams you come to a point in which you need to ask yourself if it is still worth it to keep investing in icos? Because when I see most coins going down and I see the suffering that this is causing the people I have come to the conclusion that it is better for me to not invest in icos for the time being regardless of how good I think a project can be.