This is definitely a problem, and digital rights in general is – the issue brought up by the Kindle wiping that you link to is the same thing. Media purchases online is a model that serves to give consumers very little rights, and it’s quite unclear how the agreement really works.

I also think that the process of purchasing media on a marginal-cost basis doesn’t suit the great majority of consumers, and that streaming models on fixed-cost pricing (like Spotify) can come to command a greater market share, and may put a dent in piracy. The issue of ownership is nil, and it doesn’t cost anything to try out that one more album. Imagine owning a tablet ereader, installing a library service that simply gives you all the books you could read as long as you pay €10 or whatever. Why mimic ownership on a platform where it really doesn’t make any sense?