PROTECTING THE TURF: How traditional education publishers deal with the slew of edtech startups looking to challenge their market foothold will shape the education industry. Xconomy looks at how companies like Pearson, Cengage and Macmillan are acquiring, and sometimes suing, startups to "protect their interests--and curtail the competition." The author asks: Who will rule the digital education world--startups, traditional software companies, or big publishers?