Via The Atlantic:
- Four airlines control 69% of domestic air travel
- Amazon sells 27% of consumer books in the U.S.; Barnes & Noble sells 16%
- Walmart sells 57% of Americans’ groceries
- Universal Music Group controls 38% of the global market for recorded music
- Anheuser-Busch InBev sells 39% of beer in the U.S.; Miller-Coors sells 26%
- Intel controls 85% of the global market for PC microprocessors.