...yet for every one of those, there are plenty of others trying to scam the public, launder money or evade taxes.
It is not surprising that this above is one major reason that icos won't get financial support from banks.
nobody has ever supported ICOs simply because they are all scams. there is no exception between regular people or banks in this case. everyone sees the true nature of them but only few decide to ignore it because of the possibility of some profit.