I think https://news.ycombinator.com/item?id=20879296 https://news.ycombinator.com/item?id=20879296 answers this by saying "The big players making money on the

I think https://news.ycombinator.com/item?id=20879296 https://news.ycombinator.com/item?id=20879296 answers this by saying "The big players making money on the spread"