You are doing a lot of heavy lifting lumping Europe and Asia together, and inserting Africa and Oceana, which is so small Apple doesn't even report revenue for it.
North America is 43%
Europe is 27%
China 15%
Japan 7%
Rest of Asia: 8%
Africa, middle east, oceania effective round to 0%
Basically North America and Japan make up 50% of Apple's revenue, but are nowhere near 50% of global GDP or population.
Nobody against the fact that US a is their biggest market. That doesn't change the fact that the more than half of their revenue is made in areas where imessage is totally irrelevant.
