[supermatt]

It's not rocket science. If they want to revoke a license, they should buy it back at the price they sold it. Consumer law should dictate there be no permissible alternative, and should apply retroactively.

Personally, I dont like theses digital "purchase" licenses at all. The only "rights" DRM is used for is to restrict those of the consumer - a far cry from the transferable digital rights that big-media touted that resulted in them receiving overreaching protections for copyright in the first place.

Unless they are transferable, all digital licenses should be short term (<= 1mo) and marked clearly as a rental to avoid consumer confusion.