From here (embedded below), about 57% of Apple's revenue is from the iPhone.
~57% of their $57.6 Billion in revenues last quarter is $32.8 Billion.
~20% is iPad, for $11.5 Billion.
~12% is Mac, for $6.9 Billion.
In the most recent quarter, Microsoft had revenue of $24.5 Billion. And a recent quarter had Google at $14.9 Billion.
So to really grow more, Apple really has to invent a product or product category the size of a Microsoft or a Google.
Easier said than done...but they might :) Or they can just keep printing money...
Apple revenue PERCENTAGE by product line, since 2005. pic.twitter.com/V1WYoBFE23
— Jason Snell (@jsnell) January 27, 2014