Organisms in nature are actually nowhere near as competitive as popular knowledge would have it. Symbiosis, interconnectivity, and integration are all more apt terms to describe nature's instinct than competitive in the modern understanding of Darwin.
We see the spectacular of a lion chasing down a gazelle, or silverback gorillas fighting each other, and we think "aha, this is how nature acts." But the vast majority of organisms (and bacteria and other microorganisms make of the vast majority of living things) are actually cooperative and symbiotic by default. Millions of different types of bacteria aid things like human cell respiration, digestion, disease fighting. We could not survive without them. Mitochondria are symbiotically integrated in the photosynthetic cycle of plants, which play a major part in maintaining an atmosphere livable for humans and other Oxygen dependent organisms.
Ants farm fungi, all sorts of small organisms chill out on much bigger ones and live off of them in a way that maintains the health of the bigger one.
Even viruses, so maligned, are essential for ensuring the mutations that occur on the DNA/RNA replication level of the cell division/reproduction process that allows for genetic diversity.
The worst part of the entire thing is that this whole competitive thing is attached to Darwin, as if he was the one who made the "competiting" commentary. The man just visited some islands and wrote down his admittedly limited observations - its his followers that worked out a philosophy