The problem with that is it creates a war for exclusives. If their competitors start doing the same thing, spotify will just end up losing a lot of their content.
and personally, unless spotify continues to have the vast majority of the music i want to listen to, i won't continue being a subscriber.
But if they sign the top 30 and you listen to that kind of music you will have to subscribe.
Netflicks is creating there own content which would mean spotify would need to create new bands instead of sign existing ones which most likely would fail because they are all under contract.
and personally, unless spotify continues to have the vast majority of the music i want to listen to, i won't continue being a subscriber.