It is basically a venture capital approach but on a smaller scale. Question is can you as an individual sustain several failures before the winners come up. Which can take several years to realize full potential value. So you suffer the losses inmediately and only enjoy the upside in several years... getting out too soon on the winners to cover losses of the losers can really cost you. So you'd have to fire and forget almost and come back in a few years to see what panned out...