THR's 2012 Digital Power 50

He has cautioned industry CEOs that making too much TV content available online could ultimately affect TV viewership. And he has criticized Hollywood for making too many 3D movies and charging "excessive ticket prices." Greenfield, 38, is one of Wall Street's most outspoken voices on the risks and opportunities in the industry's digital realm. He stands out because he challenges the status quo and openly questions companies' strategies. His predictions for 2012: TV viewing will begin to decline amid increased online video viewing; Netflix will redefine its image with original programming success; and Dish or Verizon will launch a virtual multichannel video-programming service as an alternative to facilities-based pay TV providers.

PHOTOS: THR's 2012 Digital Power 50