Richard Stallman, father of the free software movement, wrote that they might have more success enforcing copyright in China than Microsoft, Disney and Sony:
"Disney wishes to stamp out semi-underground organizations that sell exact copies. With free software, regardless of the type of license, that kind of copying is legal. What we want to prevent, when the free software license is the GNU GPL , is the release of proprietary software products based on our code. That kind of abuse is at its worst when carried out by large, well-known companies -- and they are easier targets for enforcement. So GPL enforcement in China is not a lost cause, though it won't be easy."
Read Stallman's article here.