Capitalists that mouth off are silenced in China, yes, as are any genuine threats to capitalism in the US Empire. The rest of your comment is just hatred of the working class. "Brainwashing" fundamentally doesn't exist, it was invented during the Korean War to explain why Chinese supported their government, and failed to be achieved by MK-Ultra. China doesn't have advanced brainwashing tech. The reality is that people support socialism because it works for them.
In China, capitalists are subservient to the working class. The state is under control of the working class, and has been since the CPC beat the Kuomintang. Your hatred of the working class would make Orwell blush.