It's ridiculous the people trying to pawn the problem off on the ADA, politics, politicians, or the deaf people complaining. The problem is that universities jumped on this bandwagon of minimal effort, low production, record the classroom with a webcam bullshit as a means of advertising and it is biting them in the ass. Realize that universities aren't putting content online out of altruism, but as part of advertising and brand building.
All of that said, it's even more retarded bullshit that a university is going to pull the content when a cheap scalable solution exists: automated closed captioning and OCR of projector / blackboard material, which can then produce output for braille. There is a solution and it is cheap, why is this even a discussion? Will the output be buggy, sure, but in the intervening time before grad students can be enslaved to tweak transcriptions, it's workable.
On the other side of things, the universities know their legal requirements, and they already know from experiments like The Feynman Lectures on Physics to know that transcription is a huge chore. Easy fix: put the prof's notes online with the lecture.