>Right, so then why don't the economics of Spotify work out if similar margins work in the games and apps industries?
Can you clarify what you mean by "economics of Spotify work out"? Are you talking about how much money artists are getting from spotify compared to steam? If so, I think the answer is pretty obvious. Video games derive an overwhelming majority of their revenue from selling the product itself and associated DLC/microtransactions. All of that is done through steam or whatever storefront, so the storefronts can rightly claim they're paying hundreds of millions to the publishers/developers. This makes them look "fair". On the other hand for music, streaming is only a fraction of overall revenue. Artists also derive revenue from live performances, merch, and album sales. That makes streaming platforms seem "unfair", because they get so little revenue from them, even if the revenue split is the same. I don't see this as an issue though, only an issue of public perception.
Artists are free to take their works off streaming platforms if they don't like the deal, but I suspect most don't because the free publicity they get from being on streaming platforms drive other revenue sources. Streaming is a loss leader. Artists complaining about this makes as much sense as news publications complaining about how little money they get through subscribers, when their real revenue source is advertisers.