Wrong and wronger. Each of the console gaming companies you mentioned has more market share in consoles than Apple has in smart phones (and Apple's share of mobile phones as a whole is trivial). While the iPhone might garner 95% of Hacker News entries, it's only selling about 15% of smart phones. (That's a lot, especially at the markup Apple gets off of it, but it's less than any of the console makers has.)
Regardless, one does not need a monopoly to engage in anti-competitive actions and for them to be illegal.