Every day I read the news about the elimination, that some project has come off and all the investors have lost money. And I'm wondering why no one has tackled this problem so far?
A scam will be forever associated with the crypto-world. There are no exact ways to avoid it unless the project shows some obvious scam attempts at first.
Just enhance your research and ability to take risks. Create your own factors on what projects should be chosen. The same to what happened in Arbidex. They are a legit company until they are not reaching out to their users. Their team's identity is public but how users can sue them and who can approach filing a case? It does mean that even a legit company will turn out into a scam.