There are more non-iOS phones out there than iOS phones. I think this is why Apple isn’t too concerned about “monopoly” talk right now. (No, a “monopoly” on Apple products is not an illegal thing.)
A company doesn't need a majority of the market to be prosecuted for anti-competitive behavior and likewise having a majority of the market does not mean your every move is illegally anti-competitive.
If prosecuted under the Sherman Anti-Trust Act, existence of a monopoly is a precondition. Certainly there are non-Sherman charges that could be brought, but I'm not aware of anything that would be applicable in this instance?
To your first point, assuming Sherman is used, I believe US v Alcoa [1] is still the controlling case law. And you'd have a very hard time convincing a court that "smartphones made by Apple" constitute a product category over which it could have a 75%+ market share.
Or are there other laws under which action could be brought in this situation?
That’s just incorrect on the face of it. Linux and Mac have existed for as long as Windows, or longer. It’s pure opinion to say there were no competitors.
With monopoly cases, it's all about market share. In the late 90s, Windows had 95%+ of the market[0]. I believe (but may be mistaken) that the legal threshold often used is 75%. Apple isn't there, but Windows certainly was.
since when does market share determine what competitors there are? competitors are businesses competing against each other for the same market share. so your chart actually proves my statement since both linux and apple existed at this time.
