You must be new around here. ;-)
Microsoft used their natural monopoly in operating systems (Windows has 95% marketshare) to force OEMs (HP, Compaq, etc.) to bundle IE with their machines and not Netscape Navigator. Microsoft threaten to cancel their Windows licenses.
And later, it decided, against its decent decree with the US government, to bundle IE with Windows, claiming Windows wouldn't function without IE, which was a lie.
Perhaps you're not aware that natural monopolies are themselves not illegal; it's using that monopoly to force the market to do things it ordinarily wouldn't in some other area.
So… no, there are no antitrust issues regarding web engines on iOS. And of course, Google, Mozilla and others have browsers on the App Store that use WebKit anyway, so it would be hard to make the case they're being harmed…
Though, afaik, Apple does not stoop to the levels of Amazon, who removed the Twitch app from Roku platform for absolutely no reason other than to line their pockets with more cash.
1) the free market doesn’t work because it is too hard for competition to enter an existing market or for existing competition to dethrone a market leader.
_and_
2) the big player(s) take (too much) advantage of their position by engaging in ‘anti-consumer’ practices.
Given the existence of Android, Apple isn’t in position 1. So, do you think (2) alone is sufficient for taking legal action? The common thinking is that the market will take care of it by by bankrupting the company doing it.
Apple has a monopoly on OSes that run iOS apps, OSes that run on iPhones, phones that run iOS and on App Stores that can install iOS apps.
They abuse all of them (e.g. the Webkit-only issue for iOS, monopoly pricing on iPhones, censorship in App Store).
Conversely e.g. Google has none of these monopolies except for the monopoly in running perfectly apps that require Google Play Services.
You could also say that Samsung has a monopoly of smartphones with "SAMSUNG" printed on them.
http://www.cordcuttersnews.com/amazon-pulls-twitch-channel-r...
2) Apple has legitimate technical reasons for not allowing other browser engines (well specifically the JS part). Intent matters.
Oh please... source?
Apple can negate this almost entirely by controlling JavascriptCore and WebKit and ensuring that their security models e.g. sandbox are tight and well tested. Leaving that up to third parties who may not be so vigilant compromises the security of the entire device.
2) Apple’s App Store policies disallow the user from executing arbitrary code
I think you can figure this out yourself.