It's not as cut and dried as people are making it seem. You know people are going to raise hell if it isn't wireless, and it wouldn't surprise me at all to see them work something out.
At the very least, they should make them with the breakaway cords that the first XBox controllers had. Best wired controller idea ever.
Doesn't bother me much anyway, I don't run around the room or anything so it wouldn't really be necessary for me. I'd rather save the 10 bucks extra it would likely cost.
So, someone with more knowledge on the subject than me: if they can't get out-of-the-box wireless functionality, is it reasonable to think that someone could come up with a USB dongle that could get around that? They could just pack it with the guitar.