Why Adele isn't streaming her new album on Spotify or Apple

`Adele factor' stemmed drop in albums in 2011

Adele is the rare artist whose allure spans demographic groups Credit: Getty

By restricting her new album “25” from streaming services Apple Music and Spotify, Adele is playing to her greatest strength: wide appeal.

The British singer is the rare artist whose allure spans demographic groups, from teenagers on YouTube and Spotify to adults who visit record stores or frequent iTunes.

Music executives liken her to a four-quadrant movie, the lingo for blockbusters like “The Avengers” and “Jurassic World” that draw in young and old, ...