Humans have broadly similar:
4) ergonomic requirements
So is it really any wonder that nice products all start to look kinda the same? Apple created the consumer tablet market (pretty much) but the limitation of us meat-sacks mean that *ALL* tablets will end up looking alike. Just all cars of a particular class look alike, all motorcycles of a class look alike, all [non-novelty] coffee mugs look alike, all LCD monitors look alike and so on.
The only people who can tell them apart are the primadonna fanbois, no one else gives a toss (unless there is passing-off).