infoneer-pulse:

A new report looking into online music consumption habits shows that since 2009 the number of people who pirate music has dropped by 25 percent in Sweden. The sharp decrease coincides with a massive interest for the music streaming service Spotify. One of the main reasons why people switch to legal services is the wider range of material they can find there.

» via TorrentFreak

I suspect the same is true (to varying degrees) in countries other than Sweden.