In much the same way Boeing is—they are one of only two options.
You could argue I'm just saying they're high quality, which may be true, but the software has been degrading and I have no options if I value openness _and_ quality.
I can flip it and mention features that Apple products don't have that I like.
But this isn't actually an argument for monopoly. That just an argument that you like a company more then the other.