When you're in crypto for over a year you start to think if maybe the majority of altcoins are just a blatant scam, even those in top 50. I've seen projects with an amazing whitepaper (not just one), full team profile, excellent website yet they never deliver on their promises. The price reaches ATH and after that it just keeps drowning and those that don't sell at the top get burned and lose the majority of their investment. "Regular" ICO's are no different from lending ICO's (Bitconnect, Regal Coin, DavorCoin), the only difference is that they may trick more people into investing and the price won't drop immediately. Just ask yourself how many of last year's ICO's are still around and if so did they deliver their product? Wouldn't surprise me to see Omisego going to zero one day.
Many projects may not be a Scam in fact, they just have the problem that they start from scratch. And to achieve something one year is not enough. Many projects and for several years have nothing and this is unfortunately true. Many projects even after 5 years can not appear anything. Because many projects have unrealistic goals or the team is not professional enough.