Earlier quoted context omitted.
I agree with you and find it immoral to compel MIT and Harvard to close caption their courses. This is because I embrace a deontological ethic. If I were to be the devil's advocate however, I would say that the difference between you putting a video out there, and MIT doing it is one of elasticity. The effort of putting closed captions on your informal video would be much too great and would be very likely to prevent…
> The effort of putting closed captions on your informal video would be much too great. $1 per minute (if you farm it out) or even less if you do it yourself. In exchange you get 7-15% more views - is that really an unbearable deal?
http://en.wikipedia.org/wiki/Rear_Window_Captioning_System
I have no idea why it would be "even less if you do it yourself", unless you do not value your own labour.