Hasn't the chiclet keyboard been around since the 70s/early 80s?
You might be thinking of membrane keyboards, which were kindasorta a precursor design. They were almost perfectly flush, with the button being located just underneath a thin, flexible square of plastic. The modern chiclet keyboard as we know it today came out with the X505.
Maybe Apple took cues from Sony in terms of wedge shape and chiclet keyboard but I wouldn't look at a MacBook Air and think it reminds me of a X505. For one thing the hinge is completely different. Also the X505 has no palm rest or track pad. This new HP Envy is much more of a rip off of MacBooks in terms of the complete design. Other companies like Lenovo, Asus, Samsung, etc. have original laptop designs. HP should be embarrassed.
True. Apple took a lot of inspiration from Sony without any direct aping them like HP did with Apple.
But it's like I said in that other thread up in news discussion. Jony Ives is responsible for a good deal of modern tech fashion, and the MBP is a good looking computer. It's like the old saying goes, imitation is the sincerest form of flattery. Why be bothered by everyone else copying the style of the company you support?
Everyone copies from everyone at some point or another. Like OllyW said above, the first unibody Macbook pros looked quite a bit like slightly cleaner versions of an HP Compaq machine. Silver keys on a silver body.
HP was actually doing the black low profile keys on a silver body before Apple was. You could almost say that if the MBP never existed, the shot of the Envy above would almost be the natural evolution of HP's style (I say almost, because HP always loved that weird super rounded edges look, whereas Apple's style is a little more squarish in comparison).
Now everything is flipped around. Apple lead the charge into sleek minimalism, and it turned out so well everyone else wants to follow suit. Sometimes a company takes inspiration, some times they give it. To use another old phrase, what goes around comes around.