Apple invented a better way, brought it to market. This directly led to Android introducing a similar feature two years later.
Headphone companies had decades to improve Bluetooth pairing and didn’t. Any one of them could have taken a proposal to the Bluetooth standards body and gotten it implemented. But they didn’t.
This is why I say the DMA chills innovation. Had the DMA been in effect at the time AirPods were introduced, Apple would not have been allowed to introduce them without giving the pairing tech to everyone for free. So if Apple decided that wasn’t worth the ROI, pairing doesn’t get fixed. So the EU has made literally everyone on the planet’s products worse because they don’t think Apple deserves exclusivity on its own inventions. The EU’s anti-capitalistic hubris ought to embarrass them. But they smugly think the reason they can’t innovate is Apple’s fault, not their sticking with the mindset of East Germans in 1970.
(Or maybe if we’re lucky, the EU wouldn’t get AirPods, or maybe get AirPods without the pairing feature, and the rest of the world would).