I did probably more digging on this than I should have... and what I learned is that finding authoritative "EU" specific statistics is decidedly not clear cut. With people online quoting ranges from as low as 10% to as high as 42%, it's hard to nail down real figures. (This
really confuses AI chatbots... ask this question three times in a row, but with seemingly inconsequential variations in the wording, and you are all but guaranteed to get three entirely different and incompatible responses. But I digress...)
As has been noted in this thread, the EU is
not the entirety of Europe. According to some statistics gathered by
Gruber, the EU controlled countries account for about 25-30 percent of the region that Apple considers "Europe" in their financial reports, which makes it 7% of their global earnings. And of course, mobile market share dramatically shifts
from one country to another, even within the same region. These factors all contribute to the bad and/or incomplete data that we discover online, with semi-trustworthy sources crediting Apple with
27%,
33% and
42%... so the answer you choose may depend on who you trust the most, or on the nature of your agenda.
I doubt very much that an authoritative and credible answer that can confidently supersede these others is forthcoming.