A fantastic article by Matt Legend Gemmell:
When you see a mature product that’s somehow managed to innovate (to be “new” whilst balancing all the constraints and annoyances of the existing problem), it becomes almost impossible to see how you could do it any other way. Design blindness sets in: the most successful product is the only possible design. Which, of course, is nonsense – but a very convincing, insistent, tempting sort of nonsense.