Yes, because we know that Taylor Swift is the typical case of an artists at Spotify... She's just the top selling artist of the last 10 years... No biggie. She pulled out because she can. Maybe to support all her other friends/artists which are getting rammed through by the streaming sites.
Those 10 level lower in popularity artists, may be desperate for a better deal than what Spotify (and others) is offering them, but with streaming not being fully monetized, the streaming sites are not replacing the money lost from singles/album sales going straight down.
if Apple offers them something better, they'd be crazy not to take it. When you compete for talent, someone who pays better gets it. That's how it should be. Labels/artists I think are waking up that the current situation is not sustainable in the long term.
As for those occult, "vested interest".. They are mostly artists which can only be charitably be called lower middle class at the best of times (but, often closer to the working poor). I know quite a few artists which have other low paying jobs to put food on the table, and barely have time to create/promote their stuff.
Yes, people want everything for nothing. But, people, especially the best artists selling their service don't have to give it them if they don't want to. That's how capitalism is supposed to work. If people absolutely want free music, I'm sure total amateurs of borderline skill may give it to them; they'll get what they pay for, which may accidentally be good... Sometimes...