They have, just on a category-by-category basis. Many of the sharing economy companies are included. http://cdixon.org/2012/11/23/some-problems-are-so-hard-the

They have, just on a category-by-category basis. Many of the sharing economy companies are included. http://cdixon.org/2012/11/23/some-problems-are-so-hard-they-need-to-be-solved-piece-by-piece/ http://cdixon.org/2012/11/23/some-problems-are-so-hard-they-...