Also remember that the doc connector is a revenue source. I'm having trouble finding a source right now, but if I am remembering right Apple sells the actual dock connectors to accessory makers.
Yep, Apple charges royalty on the 30 pin conector, which varies in cost depending on what it's used for. You have to be enrolled in Apple's MiFi program too. Apple makes money everywhere.
You can't just get them from JAE, you have to license the male plug thru Apple and it's a big process. And Apple lets no one but Apple use the female 30 pin plug.
I don't know, but there is a reason no other manufacturers use it. And its a massive legal and due diligence process to get into the Made for iPod program which gives you all the specs and supplies the connectors, along with charging royalties.