Now that Apple has opened up choice to third-party browsers as part of its efforts to comply with the EU’s Digital Markets Act, we can expect a new focus on browser market share in the near future.
Third-party browsers have been supported in iOS since version 14. What’s changed is that Apple must now offer EU users a choice of which browser becomes the default when they use their device. Apple clearly didn’t want to do this as WebKit (which drives Safari) is fundamental to many of the technologies and solutions the company packs inside its iPhones. (I think it’s likely to stay that way.)