As technology puts new tools into innovators’ hands, the old boundaries between sectors are breaking down. Amazon has transformed bookselling, branched out into general retail and is now experimenting with delivery by drones. Apple shook up both the music and telecoms industries, and now has designs on our wrists. Six years after it came into existence, Airbnb has more rooms available than IHG or Hilton, the world’s top hotel groups.

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