There are countries where Apple has a dominant market share (e.g. Japan).

You might argue Google is dominant in advertising worldwide, but Facebook is a contender in many countries (e.g. in the Philippines, Facebook is "the internet" as an approximation).

If you want to pick and choose subsectors, I am sure we could pick markets where mobile is one of the words and the second word is also something Apple absolutely dominates.

The world is a big place to make sweeping generalisations about.

Edit: parent article is about Portugal, not the world. A friend said to me: working in antitrust, on either side, a key is defining the market.