Except Apple isn’t a monopoly on mobile devices. How can you be said to have a monopoly on your own platform when that platform itself is a small % of the mark

Except Apple isn’t a monopoly on mobile devices. How can you be said to have a monopoly on your own platform when that platform itself is a small % of the market? The argument is ridiculous on its merits unless you are willing to ignore years of established case law (which is the basis of our Jurisprudence)