That might happen of course, but the question is whether they will see that or whether they will think hey! two revenue streams.
None the less I believe music will go streaming, it has to which becomes really obvious once you try out spotify (well it did for me and most of my friends who use it)
For the users it's obvious that streaming is the way to go, Spotify is golden. But for the producers? I think it's possible we might see the streaming model completely abandoned.
An interesting thought is whether they'd experiment with the rental model (pay per play) for iTunes music. Not just interesting economically but in terms of how appreciation of music might change.
None the less I believe music will go streaming, it has to which becomes really obvious once you try out spotify (well it did for me and most of my friends who use it)