[rayval]

Yes very good point.

Simplicity on consumption (user) side can require massive scale complexity on the production side.

iPhone is grandma-level simplicity to use, but hard to replicate by competitors (despite massive investment by Nokia, Microsoft, RIM, etc, they have not been able to replicate the iPhone user experience, an experience which goes beyond the device to the ecosystem of AppStore, iTunes, etc)

Another example is Google search, which from the user perspective is one simple text-entry box plus one graphic and 12 words of text on the page. But on the other end of the wire is a server farm of a million machines and rocket-science algorithms, software infrastructure and operational processes.