[usrusr]

I doubt that a streaming provider would be able to starve out interest in third party music. Most active choice music consumption is essentially a nostalgic act, even when searching for the latest hit that you heard at that party last night. Music preference could almost be considered involuntary.

An "original content superspotify" would have to dominate all channels to ensue that customers are rarely overcome be the desire (and the resulting dissatisfaction) for third party music, or restrict themselves to the subset of the market that is never exposed to channels not under their control. Both of these options are what I would consider a likely base for economic success.