The size of the Chinese market is more than double the sales value of the U.S. across the board in key areas such as consumer electronics, automobiles, and smartphones.
Even in the EC market, sales in China are approximately 2.5 times those in the U.S. Of course, this is not a PPP comparison, but a comparison of nominal values.
As a simple example, youtube, which dominates the global video service market, has annual sales of $8.1 billion,
Biribiri Video, which operates only in China and is only the third largest video service provider in China, has $3.2 billion in sales, 40% of Youtube's.
Of course, all of these comparisons are based on nominal amounts, not PPP.
Everyone who knows real business understands that U.S. nominal GDP is overstated.
China is the world's largest producer of goods and services, because it outstrips the U.S. in sales in just about every category.
Look at the sales of steam, a US company, and you will see that the only people spending money are Chinese.
China has its own payment system that is not dependent on the US and steam is not the only option.
Even so, they still outspend Americans who can only buy games on STEAM in purchasing power.