libertad: You might try & have a look at a real, truly world-class urban economy some time. The kind that exists in and around NYC, LA, Chicago, Philadelphia, Atlanta, Dallas, Seattle, San Francisco, and probably other places I'm forgetting.
First of all, not many nations can boast that many cities with large, diverse economies pumping out myriads of products. Seattle is the latest example: in and around that town are Boeing, Microsoft, Amazon, and Starbucks, to name only the instantly recognizable ones.
Behind these are a myriad of smaller companies that supply them with all kinds of services and goods: sugar, creamer, swizzle sticks, cups, plastic caps, coffee machines, air conditioning, cash registers, stools, lighting, and so on for Starbucks; software, merchandise, shipping, payment services for Amazon; parts of every type imaginable for Boeing; server hardware, DVD's, advertising for Microsoft.
Note the overlap: Microsoft isn't the only one who needs advertising; all of them need air conditioning and lighting for their offices and factories and warehouses; payment services and shipping are essentials for Microsoft as much as for Amazon.
In any complex urban economy, the majority of businesses cater only to other businesses, not to the end-consumer. CIT, which has been much in the news, is a prominent example. They exist in the background, and provide the infrastructure on which everything else is based.
A developed economy, or more accurately, collection of developed urban economies, like the US, has this in multiple, redundant layers. China is getting this now, but is still at a stage where it needs external demand to continue to provide the fuel for its growth, as those multiple layers are still not all in place yet.
For us, our growth can come entirely from within, from the cost savings and competitive advantages that can be produced almost like magic by these multiple layers of business-to-business enterprises. Think what FedEx did for small businesses all over the country, for example.
That's what we have over China, and really over most of the rest of the world, because no other country has the large number of complex urban economies that we have.
The sheer competition provided by all the enterprises we have keeps both inflation and unemployment in check in all but the most extreme circumstances, something no economist would say, because they don't live in the real world, where people fight every day to make a living. If you need to cut the price by a bit to get some business, you'll do it. If you need to hire someone to keep some big customer happy, you'll do that too, because in both cases you really won't feel like you have a choice.
Which is why all of my life I've been reading about how stagflation is going to destroy us, but it only ever came close to doing real damage once, and that was nearly thirty years ago by now.
You can, and very likely will, go broke betting on that happening again at any time in the reasonably foreseeable future.