This is true but doesn't address the question. How is this stifling competition?

yellowapple · on April 24, 2015

To answer your own question, it's stifling competition in the iOS browser space. The above example is precisely why Firefox (for example) is unavailable on iOS; they didn't want to make a technical compromise like using Apple's version of WebKit instead of Gecko or (eventually) Servo.

Basically, the only browsers allowed on iOS are reskins of Safari. Technical competition is stifled that way.

bzbarsky · on April 24, 2015

The question was for an example of Apple preventing "a break-out technology" from existing on its platform.