Opening iOS to competing browser engines is unlikely to lead to Chrome being dominant there. Safari has more than 60% market share on macOS where they've never been banned.

What it could lead to though is some real investment in Safari from Apple's part, which is very much needed considering how buggy and behind competition it is. That way maybe the web will indeed be able to compete with native as they already falsely claim it can.

I want real Firefox on iOS. Not a shoddy safari skin.

Because the Safari monoculture on iOS right now is so much better and totally not a buggy ass mess... /s