Large companies usually don’t act with a single voice. The iPhone is what stopped IE’s ability to dictate what the web would work like — not entirely without help but it’s what forced companies to treat support for other browsers as mandatory rather than nice-to-have – and WebKit was a huge win for open source, eventually including Chrome.

That doesn’t mean that things like Lightning connectors don’t also happen but in the context of the web Apple has generally been helpful for fighting monoculture since it used to be a huge threat to their continued existence.

That feeds the point about market share though, at what point is iOS too much of a luxury brand that doesn't support the effort to get over that hump of "works in Chrome, ship it"?

"I don't care if the Maserati owner can't buy these wiper blades, because look how many more GMs and Fords there are on the road every day. I bet the Maserati owner flogs themselves if they accidentally even drive in the rain, how often do you think they replace their wipers?"

iOS market share, and it's luxury brand demeanor, leaves it at great risk. I don't know where that line is, myself, but pinning hopes on iOS preventing a browser monoculture seems increasingly desperate looking at current world figures.