It's a bit of a different situation with iPhones, where so many people will buy an iPhone just because. It might be that they're used to iOS, or that they have several other devices in Apple's ecosystem, it doesn't change anything: many just don't question it, they just buy an iPhone.

Did removing the jack from the iPhone make people switch to another brand? Far from it: it gave the Bluetooth audio devices market a boom it would never have had otherwise, despite all the drawbacks of the Bluetooth connection (battery life, shorter lifespan, easier to lose. higher price point, lower quality, higher latency...) And other brands quickly understood, and followed to get their share.