No one copied anyone over anything. All-In-Ones have been around for years and years in some shape, form, or fashion. The only difference now is they're being crammed in behind an LCD instead of stuffed in alongside a bulky CRTs. Since there are only so many ways you can design one, they're all gonna look similar by necessity.
And those ultrabooks copying the Airs? How? PC manufacturers were making small, thin computers long before the Air showed up. Just because Apple managed to jump ahead and make one thinner than the rest doesn't automatically give them the exclusive right to thin from here on out. If Asus were to come out with a computer that's 1.5mm thin, would you bitch about Apple copying Asus when they eventually come out with a similar model in the Air series?
And just like the all-in-one PCs, they're all gonna look similar since there are only so many ways you can design a laptop. Specially a small one.
edit'd
Admittedly, yeah. It does. That tapered design does seem to take more than a few nods towards the air. But..eh...it's more rounded in the back. I dunno. Hell if I care.
Also, it has a higher resolution screen.
