Market share does not strictly determine market power.

Further, the commenter was referring to the U.S.

Right. As long as there are TWO oligarchs left to choose from, it's clearly still a free market. настровье! Nastrovje! :)

Yeah. MS was a completely different situation. They had something like 90%+ OS marketshare and were able to use the threat of cutting off a PC makers access to Windows in order to force them to use IE. Tbh, the case is more relatable to the case Google just lost than to Apple. In that case, Google cut secret deals to exclude phone manufactures from including other stores.

As an app developer in the EU, my apps rarely target JUST the EU, but also the US and beyond.

Why the market share would matter if there's no competion in the mobile space?

> if there's no competion in the mobile space?

How did you come up with this?

What could be signs that Apple and Google are competing with each other on the mobile app space?

The only tariff change ever made was made over a threat of an anti-trust lawsuit and copied straight over completely verbatim to the second company.

And it's not like users of one store can try to shop to the other one anyways. Each user is captive of their respective store.

On the hardware side sure, the competition is fierce and visible, on the software side I don't see anything at all.