Wanted: iphone music subscription

I'm not the first, and I won't be the last, but when will we get more choice around downloadable music on a subscription basis, for iphone??!!

For me, this is currently the biggest drawback with iphone, and was almost a reason for me going with nokia over Apple. I simply must have my music collection with me wherever I am, and I need to limit the number of devices I'm carrying, hence phone must double as an mp3 player.

I chose iphone because I eventually decided all of the other functionality outweighed the music thing (!) But I was ecstatic when I discovered the spotify subscription. My initial take on spotify was that it wouldn't fly unless it could go mobile and I think I have been proved right. That is, assuming they are making money out of this of course. It could not have been cheap to get Apple to agree to an itune 'competitor' on its devices, but then I guess Apple's main thing is not content, because as we all know all digital content will soon be 'free' of sorts (discuss)

So where are the others? I thought they would be piling in? I really don't get it. Perhaps napster have lost the spunk they first started with back in the pirate days, and the new Swedish kids on the block are now the ones pushing the boundaries, even securing the offline access before Rhapsody - the only other (as far as I know) iphone subscription service, in the US.

Now we just need films and books on the same basis...