Once upon a time, AutoCAD had what was arguably the best software documentation on the planet. My R11 package measures 6.5"x9.5"x12", and contained the software, hardcover book, media, drivers documentation, and customization documentation
Today, my Map3D 2008 entire delivery is a DVD case, with slips of paper and a couple of CDs inside.
It's not about customer service, and it's definitely not about saving trees. It's about shaving Adesk's real cost for software delivery, and increasing the bonuses of the honchos. The delivered software package has lost substantial value to the end-user, and if you want to be able to read any of the documentation, you can burn out your eyes on-screen, or kill a whole bunch of trees printing out single-sided letter pages, substantially increasing your cost of ownership.
And frankly, the quality of the writing has suffered. Editing, cohesiveness, and completeness are not substantial concerns anymore. More fluff, less content.
They got away with it, and increased the price.