Is there a scientific survey on the number of Cryptocurrency fails / scams? Is there a scientific survey/ publication/ paper about how many of the 1597 cryptocurrencies/ blockchains listed by coinmarketcap.com or similar, might be scam, have failed or are not even developed? 

I wonder how many of those hundreds of blockchains around might be serious projects. 

Blog entries or estimations might also be useful to me, but I would like reliable information.
Bitcoin.com


  Having completed an extensive study into last year’s crowdsales, news.Bitcoin.com can report that 46% of them are effectively dead already – despite raising over $104 million.


Satis Group's Cryptocurrency Research


  On the basis of the above classification, we found that approximately 81% of ICO’s were Scams, ~6% Failed, ~5% had Gone Dead, and ~8% went on to trade on a exchange.


Lastly, Bitcoin.com also mentions that in an MIT-authored research paper, Initial Coin Offerings and the Value of Crypto Tokens, it was "found [that] only between 5% to 25% of ICOs are frauds." However, I couldn't find evidence of this claim in the paper mentioned.