I think you might have misunderstood me. I didn't want to say that USB-C was only supported by Apple. What I meant was that of all the devices that Apple make

I think you might have misunderstood me. I didn't want to say that USB-C was only supported by Apple. What I meant was that of all the devices that Apple makes, until yesterday only one supported USB-C, so shipping the new iPhone not just without Headphone Jack but also with a cable that can only be used with the minority of all their computers would really have been a strange move (plus, there's no small USB-C power brick yet, so they would have had to produce one of those too - or give you their 29W one for free which would probably have been a bit too expensive)