Same comments were made by printshop owners when Apple introduced the first Laserwriter. Sure indication of the big guys well on their way to being referred to as dinosaurs.
Contradictory goals? Saving the world generally means selfless work for the common good. Startup generally means creating a new business with the goal of making yourself rich. (I know that will piss a lot of people off.)
But if your goal of saving the world works out, you'll get rich on the speaking fees.
It would be interesting to see a Python/Javascript comparison. I have a hunch that the explosion of new tools-- js frameworks, node, mongodb, etc.-- is going to lead to thousands of coders writing millions of small apps. Big potential market for those students to come into.