Evolution has lead to optimization and efficiency many times. It rarely trends to maximization or the largest possible efficiency, since those conflict with "good enough". Protein structure and function is a common example.

Not even good enough: "population reproduced faster then it died".

That's it: and it's separate from good enough because that can include things like "happened to live on the part of the island which didn't get obliterated by a volcanic eruption at the only point in history that volcano ever erupted".