It took Spotify 6 years because they were one of the pioneers of subscription streaming and had to start from 0. Apple have come to the party at a time where all the hard work has already been done and with a massive ready installed user base, so I am personally not that surprised they did 10m so quick and Spotify didn't!
Personally however I'd still not pay for either service yet as I currently spend around £60/year on new music so the numbers don't add up for me.
Personally however I'd still not pay for either service yet as I currently spend around £60/year on new music so the numbers don't add up for me.