[dfc]

> Consider how many relatively successful life-forms cannot exist without a very specific other species of life.

Let's ignore how "many relatively successful [extant] life-forms" versus the ones that had "evolutionary challenges." There is an enormous difference between a species survival depending on the existence of a prey species and a species survival depending upon the existence of another species for uninterrupted, cooperative and coordinated behavior. Your relation to your SaaS provider is not similar to the blue whale's relationship with krill, it is more like the goby and the shrimp.