[GoblinSlayer]

I guess concerns must be addressed perfectly. Otherwise solution won't stand criticism. For example ransom, if paying ransom is legal, then it's legal, if it's illegal, then it should be reasonably stoppable with police resources as an easy meatspace crime. ICO scam - if you think you can get it wrong, then stay away from it just like you stay away from gambling. Investing everything in a risky asset - this absolutely happens on fiat market, but it's okay there just because.