Apple is one of the few that adheres to standards pretty well. I believe they have been using, and continue to do so the 32pin interface cable. All compatible with the iDevices. The lightning cable is new but I can plug it into any mac, PC or USB charging station and it will charge or communicate with the device I plug it into.
Take any phone from any other brand and they will, or have been suppling different cables throughout the years for each and every different model.
Also, don't forget it was Apple that used USB first, only after that it was the PC that started to use the USB standard, and the MAC's are still using USB next to the newer standards. Where MS or Adobe used there own media format's, Apple have been using H.268 for very very long times, only for other companies to follow and making it there standard, even Firefox comes back to that decision! webDAV webCAL, all standards used by Apple for there iDevices where for example Microsoft uses it's own 'standards'.
Also, USB won't work for everything, you cannot reliably transfer video+ audio signals over USB in a predictable way.
So, don't come to me that Apple doesn't adhere to any standards, they are doing a fine job, may be not perfect, but they are for sure not in a bad position.