My (admittedly poor) understanding of antitrust is that it's not illegal to have a monopoly, but rather it's illegal to abuse that monopoly position in anti-com

My (admittedly poor) understanding of antitrust is that it's not illegal to have a monopoly, but rather it's illegal to abuse that monopoly position in anti-competitive ways. And aside from the consumer rights issues of walled gardens, there are serious conflicts of interest with Apple offering services such as iTunes and iBooks while also being the sole software vendor for competitors such as Netflix and Kindle.