They're all linked together in an incredibly complex web of competitive and cooperative relationships. Each company works to survive in its market niche just as each individual organism works to survive in its ecologic niche. All living things evolve. Over time, they become more complex, specialized and efficient. In nature, this happens when genetic code, the information recorded in the DNA molecule, undergoes mutation and natural selection.
Biological evolution creates new species.
Similarly, in our economic ecosystem, technological information recorded in books, databases, technical manuals, source code, and blueprints is altered by innovation and market competition. Technologic evolution creates new industries. For the most part, yes. Remember, even though the tropical rainforest is the most complex thing on the planet, nobody designed it and nobody runs it. Truly complex phenomena cannot be planned, they emerge spontaneously.