Of course they understand that "theirs" is based on production; we are their consumers.
Being on top of the heap, we cannot have a strictly industrial production based economy, it just doesn't make sense; instead it makes sense to be cutting edge in technology R&D, medical science and financial services.
Yep. China has little domestic consumption and a majority of the population (I believe the majority) still live in conditions that would make us cringe. Remember, China is a communist country with a state run media and heavy controls and what goes in and what goes out.
For our nation, I will agree with Alex23, we have passed our Industrial Revolution and now need to move on. We will never again assemble TV's or radios or CD players, we will leave that to cheaper and less skilled/educated labor, but we WILL produce that research necessary to design and engineer these products and also build the specialty parts and components that couldn't be handled elsewhere. Dow Corning in Michigan produces the clear panels for LCD screens, for example.
The only problem with this is organized labor and our relatively poor k-12 education system.