Earlier quoted context omitted.
The logic is that you're not allowed to use your position in one marked to gain influence in another. Google knows that most manufacturer needs their devices to ship with the Play Store, because that's where the apps are and smartphone without apps are useless. But they use the Play Store as leverage, forcing manufactures to also ship Chrome, rather than Opera, Firefox or their own browser and that's the bit that is…
Name an industry that doesn't use their position in one market to gain influence in another.
Honestly your comment is pretty much kindergarten level argumentation, so I think that maybe you should just take your ball and go home.
The question was regarding to the logic behind why Google is getting fined, while Apple is not, and I think I answered that question pretty well.