Apple's influence on the industry strikes again. Even if Apple isn't the first to take up some technology or improve a design, they are a trendsetter.
Once Apple ships magnetic power connectors that stop laptops from being pulled off desks or they ship a solid metal, reversible, extensible/future-proof connector, everyone else decides to jump on the bandwagon. Ultrabooks (read: MacBook Air clone) are another example.
Honestly, look at the USB 3 micro connector... it has to be the ugliest connector design ever imagined. They waited until after releasing that abomination on the world to suddenly decide reversibility and future-proofing were a good idea. I hope their wonderful redesign adopts the Lightning-style solid metal shape. The plug itself is much stronger, less subject to getting bent, smashed, etc, and naturally allows the socket to be sturdier. Smart moves when you are talking about a billion hairless apes smashing connectors into sockets as if they were rocks. How can you see the images of people putting coffee cups in their CD-ROM trays, busted-off mini-TOSlink connectors, etc and think any of the existing USB connectors are intelligently designed?
Apple thinks primarily about user's experience and is willing to toss legacy technology in the trash to streamline it. The USB-IF decided that USB 3 mircro had to be backwards-compatible with USB 2 micro so they just slapped a second port on the side and called it a day. If Apple makes a change, you're stuck with it so get over your floppy disk obsession and buy a USB memory stick. For everyone else, if Generic Vendor #9548 doesn't keep supporting your $9.99 USB 2 micro car charger, someone else will so any changes risk alienating users and failing to see any adoption, making manufacturers risk-averse.