You can't generalize and say all ICOs are scams. Sure, a lot of them are useless. But look at NEO (formerly Antshares). It had an ICO a while ago and it's becoming a top crypto.
Honest question. Is there a single ICO where one can use the tokens to redeem a good or service which cannot otherwise be procured and which is improved by way of using a token to purchase it instead of cash?
I say potential case, because while the goal seems noble, so far I don't see the tokens available, and it seems the project is still knee-deep in some mathematical and technological issues around the coin itself.