I see it as proof that they feel differently about software than music or videos. Whether it's because they want/need support or because they get the manual or because they are most likely using $500 software to earn a living. All of those reasons do not exist with music and videos for consumers. Hence a different attitude toward $500 software.

The reason DVDs are not pirated as nothing to do with DVDs having more value. It has to do with the fact that it's still to hard to do. It's easy to find MP3s. It's relatively hard to find DIVX files. (You've got to be proficient with IRC and then make some trading buddies, deal with UL/DL ratios, DL queues, etc.).

MP3s play the song pretty much the same as it does on a CD. Press Play, hear the song. A DivX file does not play the same as a DVD. As you mentioned those extras are missing but those extra are only missing because someone has not made a better format than DivX that supports all those extras.

MP3s take minutes to download, DVDs take hours.

All of that will change in the near future. The net will get faster, someone will make a better format. DVDs will be as pirated as CDs are now.

I would argue that there is nothing you could add to a music CD that would get most people to shell out the money given a free, easy, convenient alternative. Except for super fans, most people don't want liner notes, artist bios, etc. And if it was ever added someone would just make MP3 version 2 to add all that stuff in. A steel case? Well, as my MP3s go in my iPod I could careless about a case.

Would I rather have 100 DVDs in cases or 100 movies on an HD Video Walkman? I'd take the walkman. Sure a few people will be saddened that they no longer have a cool case but the rest of the world will move on like they did from big album covers to CDs and from CDs to MP3.