i don't think if they'll be around in 5 years is the best criteria. crypto is blowing up at the moment and i dont think this will last forever. most likely the bubble will pop eventually. theres likely a small timeframe where making crazy gains with icos is possible, or happening as often as it is now. i say invest in the best projects u can find for the next 1-2 years, hopefully make immense gains, then pull most of your shit out anticipating a market crash. at that point we can see who is likely to survive post-crash/5 years + and we don't have to guess.