Apples and oranges. your terms are mixed up.
Communism is a political structure. Capitalism is not.
It is possible to have the two co exist, and China is doing that, albeit with difficulty.
>Communism is a political structure.
Not according to the primary dictionary definition:
http://www.m-w.com/dictionary/communism
1 a : a theory advocating elimination of private property b : a system in which goods are owned in common and are available to all as needed