Not until we start seeing crypto scammers get arrested for real many new investors won't join,I have friends that won't join crypto because of scammers running away with ICO funds forever ,no way to arrest them and get the funds out of them,the few news I read about getting some scammers is not enough ,the more there is an effective way the less scammers will harm crypto
That is why scammers are a major problem in the development of ICO/IEO, unlike in early 2017 where such incidents are rarely found and developments in that year are very good. Increasingly here more and more are easy making tokens of use scaming on behalf of the ICO project, as you say it is difficult to reclaim investment and imprison these fraudsters because the cryptocurrency does not yet have strong evidence to do so, even though the transaction or digital footprint will always there but without identity information it will be difficult to do it.