[berntb]

Point, but they also got something existing to copy -- and be compared against.

[forgottenpaswrd]

Point, it is way easier(and far less work) to copy than to design something from scratch.

[berntb]

That was half of my point; the other half is that the copy will be compared to the original.

When you steal a design and reimplement, only Microsoft (ten years ago, not now) got away with doing it worse...