[nolok]

That will be a crucial point of the ruling to come yes, as the full version is "You're not forced to use them to sell on the market", and it depends on what you define as "the market".

If you consider selling apps to ios devices to be its own market, then yes you are forced to use Apple. If you don't consider that to be its own market but only a part of the actual "phones and tablets apps" market then no you are not forced to use Apple.

I believe because of the size of their userbase that apps for ios devices are a market on their own, therefore "you are forced to use Apple" applies. Here the EU seems to agree.