Apple has done astonishingly well in the last 20 years, but the entire professional world runs on Excel and it has done for decades. There is no way that chang

Apple has done astonishingly well in the last 20 years, but the entire professional world runs on Excel and it has done for decades. There is no way that changes any time soon. Apple's services business is growing rapidly but they're all consumer-facing and easy to cut if times get tough.