My take on this is that any strategy that depends on analyzing news flow, statistical arbitrage or publicly available fundamental information is completed dominated by quants. Computers can do all that much more efficiently than a human trader. Unfortunately for me, that is how I made my living up until 2010. Now the humans need to find new datasets to arb, as mentioned in the article above, and engage in an arms race with other traders. While fascinating, that's far beyond the skill set of old traders like me. Intuitively, I'd think strategies that are less data intensive and involve more qualitative reasoning - such as longer-term forecasting would be a space yet to be conquered by the quants. Similar to the fact that computers have master limit hold 'em poker, but not no-limit, for which information is far too imperfect for a computer.