Then stop invest in scam project. Most are so obvious it is cringe material seeing people invest in them. Only invest in real project which takes an evening of research.
Yes, complaining about scam projects will not solve the issue, but knowing what to do to filter them out as investors is simply all that counts. It is just very funny that so many people today are so inexperienced and still get not to ask questions and then blame the ICO space for their losses but do not get to find out how they can detect scams.
I know some will say that is hard to do but I consider that laziness on their part. I have never been scammed in ICOs and I have invested in solid ones over the years, and the last time I checked, I have the same number of head everyone has.