Music is now disposable. Do you really think people will still listen to their Taylor Swift or Ellie Goulding albums three years from now?
I'd really disagree with this. Spotify to me is revolutionary. People use spotify because music lasts so long, and to filter out the junk, because the cost of a really diverse music collection (buying CDs) is much much greater than my $10 / month spotify fee.
As an amatuer guitarist, it is not uncommon to want to listen to several CDs to hear specific styles or understand the history of music. Before spotify, I might spend $100 on CDs trying to research the roots of blues (e.g. just buy one CD of each of the greats: Son House, Muddy Waters, Wolf, etc.). Or decide to listen to several CDs by a single artist to see their growth. That was very costly buying CDs, but on spotify? Still $10 a month.
It allows me to surround myself with music. Literally, I listen to music all day at work, and never the same CD in a row (and usually not the same CD in a week). Just to keep up such a diverse set of music was incredibly costly before. And whereas buying CDs I used to waste money on the occasional dud I'd never listen to more than once, that never happens anymore.
And it's not just me. Take guys like my coworker for example. He downloaded the Rolling Stone Top 500 Album of all time list, and started listening from bottom to top. Great idea that you couldn't afford to do buying CDs ($5k to listen)
Another great example was at a family gathering a few weeks ago. I could just put on music that was appropriate to the crowd without having to buy a lot of CDs (and then not buy the one someone requests)
Really streaming music is revolutionary. It's night and day from 20 years ago where I used to go to The Wall, drop $20+ on a CD, and be stuck only getting what they might have in stock. Suddenly, no more special ordering necessary. Any style, anywhere, anytime.