It is getting increasingly difficult to just invest in companies you believe in. Like how twenty years ago you could buy a stock you believed in for like $4 by using a computer system, paying a fraction-of-a-penny spread on average, to have a trade executed in milliseconds to seconds, but now you have to talk to a human on the phone and pay a $400 commission to pay a fraction-of-an-eighth spread and have the trade ex…
Trading stocks is fantastically easier, sure. That is obvious. And he says so at the end: "There is value to trading automation. It is here to stay." He never says _trading_ is difficult. Your comment would be more interesting if it confronted his main point: "There is absolutely NO VALUE to High Frequency Trading. None. We need to bring our markets back to their original goals of creating capital for business. "
High Frequency Trading makes trading stocks cheaper. There have always been market makers. They used to be expensive humans. Now they are cheap computers. This means that it now costs less for you to trade a stock.