A little confused

I am a little confused right now. I am reading freedman and he has got to his example of comparing America and China. He is explaining how more complex jobs and special needs are created but i do not understand his example.

"But if you look at the prize they are going after, it is now a much expanded and more complex market. It went from a market of 100 people to a market of 1,100 people, with many more needs and wants. So it should be win-win for both the American and Chinese knowledge workers."

Why?

Actually as i wrote this first paragraph i felt a moment of clarity, but still i am a little confused. I think what he is saying is that the bigger the pool of people, the more jobs present themselves because the market becomes more complex and in need of special things.

I will read more and see if this clears itself up.