I don't think iPhone/iOS market shares in the EU are high enough. I couldn't find a definitive source, but it seems to be somewhere between 14% [1] and 25% [2], the latter in the wealthier European markets.
These numbers also include UK (I think), a traditionally strong market for Apple, but which should be out of EU Single Market by the end of the year.
IANAL, but I don't think that's enough for Epic to have a case in the EU. On the other hand I could see the EU being more likely than the US to regulate these kind of stores, to try to protect European editors against Apple/Google. But the lobbying would have to come from European editors, not from Epic.
This isn’t about device sales. The market in consideration is the $100bn/yr app-store market, of which Apple has 2/3 globally and around 55% of the European segment in 2019.
These numbers also include UK (I think), a traditionally strong market for Apple, but which should be out of EU Single Market by the end of the year.
IANAL, but I don't think that's enough for Epic to have a case in the EU. On the other hand I could see the EU being more likely than the US to regulate these kind of stores, to try to protect European editors against Apple/Google. But the lobbying would have to come from European editors, not from Epic.
[1] https://9to5mac.com/2019/08/12/iphone-market-share-in-europe...
[2] https://macdailynews.com/2020/01/29/iphone-takes-24-3-smartp...