To be honest, as anything in this world, which has high rate of ROI, there will always be scams. Nevertheless, not all of them are - do your research cautiously and read a lot - this is how you avoid scam and increase the possibility of becoming wealthy in no time. For example, you might wanna check Cointed - a well established company, which proves people otherwise with its efficient usage of ICOs. As stated above, it really depends how deep you go when researching something.