The key was streaming, not downloads, an idea that revolutionized the industry and catapulted Spotify into a $140 billion music powerhouse. The serial entrepreneur, who announced on Tuesday he will step down as Spotify’s CEO next year, has his sights set on building the next Spotify — albeit not in the music industry. Music groups including Massive Attack, King Gizzard & the Lizard Wizard, and Hotline TNT removed their music from Spotify in protest. FROM CODER TO MUSIC INDUSTRY DISRUPTORAs a 23-year-old coder, Ek started Spotify to challenge online music piracy with a legal alternative, something even big music companies were struggling to address. Under Ek, Spotify pushed three big levers that reshaped the business: price-disciplined subscriptions, algorithmic playlists that could mint hits overnight, and an ever-widening content range, from podcasts to audiobooks.