re: Keep The Web DRM-Free
The point is that what doesn't work, and what does work will become apparent. Companies are interested in maximizing sales and profits. If something doesn't work, they will try something else. If they DRM everything, and they lose customers, they will back down to the point at which the customers come back.
As far as the music industry goes, you are wrong. People did put up with it very happily. It isn't DRM per se that people see as a problem, but rather how content owners take advantage of their customers because they can do so.
Before Apple made a deal with the music industry, and released songs for $0.99, songs were being sold for $2.50 to $3.75 apiece. Customers wouldn't buy into those prices. And so piracy blossomed. But they did buy into the 99 cents a song, and turned Apple into the biggest music vendor in the world. This was with DRM. But Apple's DRM allowed people to do far more with their music than the older schemes, and that made a big difference as well.
B music is much easier to pirate because the file sized are vastly smaller. Most people still don't pirate movies and Tv shows because of the hassle.