How?
Consumers:
Buy Music--The music is located in the internet and downloaded to your phone.
Stream Music--The music is located in the internet and downloaded to your phone.
There is absolutely no difference between how you get and play the songs.
The difference between buying and streaming is that when you buy a song, you have to pay for each individual license separately; while with streaming you pay for access to the entire music library at once. So for consumers streaming is far superior to buying.
Musicians:
They make their money off tours and concerts while the marketers and publishers make it off sales.
Marketers:
Traditionally these people have been the ones opposed to streaming. For consumers that purchase a lot of music, streaming is typically cheaper. For the marketers/publishers lose money. However sales are going down and streaming is going up so they got no choice but to get on board.
In short streaming is good for consumers, neutral for musicians and bad for publishers. Overall I'm happy with the new system as a consumer.
I guess we'll have to agree to disagree, because I think nearly all your understandings are wrong:
Consumers:
Buy Music - It's yours forever, to enjoy without further payment.
Steam Music - The music available to you changes based on the whims of contracts you have no control over. One day your favorite band might sign an exclusive deal with a streaming service that doesn't have your second favorite band. Also, should you stop paying ever, all your playlists, collections, and personalized data is gone. There isn't even a standardized playlist format to make switching easier. Did I mention it's also totally locked down with DRM, meaning only approved devices and apps can make use of that music?
I don't quote Jobs often, because it's become too cliche. However, this statement about renting music is appropriate since the statement is truly timeless and is as true today as it was in the early 2000s, was true in the 60s, and will still be true in the 2060s:
"Just to make that perfectly clear, music’s not like a video. Your favorite movie you might watch ten times in your life — your favorite song you’re going to listen to a thousand times in your life. If it costs you $10 a month or over a $100 a year for a subscription fee to rent that song, that means for me to listen to my favorite song in 10 years I paid over a $1,000 in subscription fees to listen to my favorite song ten years from now, and that just doesn’t fly with customers. They don’t want subscriptions."
Musicians:
No matter how you turn it, sales are a better revenue source than streaming for the artist.
Marketers:
In the long run, anything that successfully competed with and convinces people away from piracy is a win.