Ok, I may be going too far off-topic here, but let me pose this query: so far as I know, the only two mechanisms available to treat intellectual property as a salable product to the public are (a) associate the IP with an individual (the system used by app stores today) or (b) associate the IP with a physical object (used by DVD, BD, and such media).

Associating the IP with an individual requires some form of human identification; but if you've got your IP tied to a physical object, you can sell the physical object without knowing anything about the buyer. So, would it be possible to construct an app store based around the sale of IP tied to some sort of physical objects? Say, a dongle or something you'd use to authorize use of the app after it was installed on the device. (For example, you could sell the dongle anonymously at retail stores or the like; then, use it to authorize something downloaded anonymously from a repository on the net.)

Anyway, just an idea here. It seems that, for the most part, folks generating IP today wish to sell it directly to individuals, and for the most part, individuals today seem happy purchasing IP individually for themselves. So long as that is the case, some form of single-user licensing is going to need to take place...