The real news is personality news, news about the stars as celebrities. Where once new or difficult artists might gain traction with the help of critics who could help build context and create regional art movements, such coalescing around an idea is now more difficult. Where once financial analysts were imbued with a sober code of behavior and status designed to inspire confidence in the investor, the internet has changed all that. As information formerly available only to experts has become widely disseminated over the net, investors took control over their own investment decisions. The deeper answer is that the big-time broker, like the serious critic, likely has a better shot at considering the broader picture and locating an aesthetic judgment within that picture.
Investment strategy is different from the hot tip.
If critics have largely lost that ability to set agendas, perhaps it is because, at least in part, they have given it away.