I wrote about a similar comparison way back in the middle of 2017: https://benshieldsblog-blog.tumblr.com/post/165101127465/let... https://drive.google.com/file/d/0B9li-Wu3-bPEWEswQVdIOHVKTmM...
honestly, anyone with half a brain do not see that cryptocurrencies are re-hashing (heh) every single scam from the unregulated investment market times? every single one of them. Many times over. I think everyone knows, because, c'mon. But everyone thinks they are the smarter one and will be the ones fooling others and making money. Which makes this article, and yours, pointless, because, everyone already knows that.
In traditional finance all water has been wrung out, but in crypto relatively unsophisticated versions of strategies like arbitrage can be quite successful. Traditional finance institutions are more sophisticated and have more resources than their crypto equivalents. I really think traditional finance orgs need to realize they can employ the same skills to the crypto space with a much lower investment for the same returns because the space is so immature.