Apple doesn't necessarily need to grow its revenue in order to provide ROI. They could merely decline/plateau at a slower rate than the market has priced it at

Apple doesn't necessarily need to grow its revenue in order to provide ROI. They could merely decline/plateau at a slower rate than the market has priced it at. Or they could use their gobs of cash to continue the buyback program. In fact, Apple's buyback program is expected to reach $200 billion by 2017. Even if Apple's revenue stopped growing tomorrow, they would throw off enough money to run a huge buyback program for years to come.