I have had the a good fortune of speaking with good number of the leaders in education technology today. Since so many of these players have emerged from academe, the competition between companies is fierce certainly, but there is also a collegial willingness to acknowledge the successes of other companies.
In the case of non-profits like edX, CEO Anant Agarawal says, the more companies that enter this space, the merrier. (Stay tuned for my interview with Agarwal on January 20th.) Several of these leaders acknowledge that the most influential person to the MOOC landscape has been Salman Khan.