Yes your right but we can blame all the ICO'S that are being launched because some ICO'S are really profitable in the past year. We just need to be more careful in investing our money to prevent from losing it in those scammers that really want to earn a big amount of money in just a quick click like in a email.
you can only blame but cannot sue the ico because there are no specific rules for ico who are scams. not all ico are scam and there must be something profitable and it also becomes our challenge and risk when we want to join in, if ico is a scam you might not have been lucky.