Earlier quoted context omitted.
Yes, that's absolutely natural. That's like saying 50 to 70 of Internet traffic went through an ISP.
I suppose. I mean, I get the difference between quality and quantity, but if we're talking about the gravity of the problem, the knowledge that 50-70% of trades are HFT/automated tells us something about the nature of our securities, commodities, etc. markets. Doesn't it?
50-70% of auto transactions are between dealers who don't even drive their cars and only own them for weeks!
50-70% of bread transactions are between distributors and supermarkets who don't even eat bread and want to sell it in days or even hours!