Except that companies have real (and for bigcorp, relatively stable) value, and that you are entitled to a fraction of it's dividend payouts (if it pays out dividends)
I fail to see the value of "legit ico" vs. stocks..
The only real difference is the lack of oversight and "common rules" - both of which I value when I invest my own money...
Stock (or bonds for that matter) have a long and stable legal history and are mostly standardized and well understood. (Not that investing in them is easy, I primarily buy ETFs).
ICOs are more wild-west anything goes, which just opens up so many cans of worms IMHO.. And if/when it gets too big or to wild-west all financial bodies declares the securities and they are then under the exact same rules...