As long as the market don't go flat & stay that way for years than there is nothing to worry about. If you take a intra-day chart of Amazon or any other stock or commodity, intra-day ranges are no different than they were back in the 90's before the PHD's invaded. Trading costs have gone way,way, down & the retail trading platforms have gotten to be more like what the pros use. There are better instruments to trade now, like the emini's. Traders in this era are lucky. A trader can no longer compete against the HFTs & win the bid-ask spread with any consistency, not a big deal since there still a zillion ways to make profits if you put your work in.