No. Power. Money means little in China if you don't have the ability to spend it without being arrested for "tax evasion" or "corruption"
Wal-Mart is a pretty savvy company (look how they have wrapped up America - Americans are Wal-Marts bitch). I'm pretty sure they wouldn't invest that much money in a country where no one can shop or spend without being punished.
Why not? The Party will only intervene if its threatened politically. The Chinese know that if they speak out, they risk being disappeared. A few brave souls do speak out every year and duly disappear. A billion of so people keep away from politics and concentrate on getting rich. Its going to be a HUGE market. When you drive in the countryside, you see they are building freeways. The Chinese have every intention of getting a market economy without political freedom working.