I enjoyed this long essay by Kevin Kelly about how "all goods and services are candidates for rental, sharing, and the social commons." He raises a lot of interesting points. Here's one:
Very likely, in the near future, I won't "own" any music, or books, or movies. Instead I will have immediate access to all music, all books, all movies using an always-on service, via a subscription fee or tax. I won't buy – as in make a decision to own — any individual music or books because I can simply request to see or hear them on demand from the stream of ALL. I may pay for them in bulk but I won't own them. The request to enjoy a work is thus separated from the more complicated choice of whether I want to "own" it. I can consume a movie, music or book without having to decide or follow up on ownership.
For many people this type of instant universal access is better than owning. No responsibility of care, backing up, sorting, cataloging, cleaning, or storage. As they gain in public accessibility, books, music and movies are headed to become social goods even though they might not be paid by taxes. It's not hard to imagine most other intangible goods becoming social goods as well. Games, education, and health info are also headed in that direction.