Surely true, but that's the purpose of a system in the first place: to manage complexity and make it predictable. You could argue that we have such a system in place, given how well the Internet works overall. The fact that this system has problems goes against what I believe is fully evident proof that such a system can, in fact, work even better.
We're not talking about a leap in order of magnitude of complexity here—just simple management of common human behavioral tendencies in order to promote more reliability. "The problem is inherently complex" is always true and will always be true, but it's no excuse for not designing a system to gracefully handle that complexity.
The internet works because it provides very weak consistency guarantees compared to what businesses might require out of an EC2 management console. (IMO.)
We're not talking about a leap in order of magnitude of complexity here—just simple management of common human behavioral tendencies in order to promote more reliability. "The problem is inherently complex" is always true and will always be true, but it's no excuse for not designing a system to gracefully handle that complexity.