I'm not completely sure what you are trying to say. I agree they could potentially evolve such an attitude if the selection pressure was high enough.

But evolution doesn't work like a chess player. Evolution does what works in the short term, blindly having the most successful alleles push forward to the next generation. If there were a chess analogy, evolution would be like a massive chess board with millions of players and each player making whatever move looks best at a quick glance, and then there are a few hundred thousand players who just move randomly.