Apple didn't give design advice to Samsung because they're arrogant. It's because for them to argue that their patents are being infringed, they have to point out alternative designs that could have achieved the same effect.

IP laws are screwed up, but a lot of people are jumping on this bandwagon out of ignorance. It's like people who get mad because a brand comes down hard on folks using their trademark. It's a legal requirement that they enforce the trademark, otherwise they lose it.