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
depending on the country the scammer is located and how the country treats such people or how the country react to such crime. You know in US they take scammers as a very serious crime and will not waste time to prosecute them. So if some countries take this very likely, then you would see a different approach.
But most of the projects in ICO are not in the US, there are only few projects like CENTRA that was considered as they violated the law in the US, and they got jailed IIRC, so other projects are now smarter, they learn from the big mistake of CENTRA and they run their project in different country where crypto regulation is still lax.