The problem is that people are still investing without any research of each project. Thats why there are so many scams around, because, unfortunately, investors are even too lazy to read the whitepaper or to check the team members.
We cannot control other people this is why many have been a victim of a scam because of lack of education, and lack of research of a project. Theres so many created project some of it a carbon copy and no uniqueness so we should be careful in choosing a project to invest. This is a learning lesson to all of us to always assess a project before investing.