I don't think it is particularly standard. Otherwise, Apple would be lost among the myriad of companies out there creating innovative products
I do think that Apple has got many things right as they keep delivering and everyone tends to follow. The fact that PCs in general a little nicer to the eye, and the various features in the gadget marketplace... many of these things are copies/evolutions from Apple's products.
Although I can imagine Steve walking in, liking something, and then everyone dropping everything to get that thing made no matter anyone else's opionion...I think possibly the MacBook Air and the new folder icons in Leopard fall into this category.
Umm...do you realize how fanboy-ish you sound?