>75% of global poverty reduction has been due to China lifting over 800 million people. The real number is even higher if you account for Vietnam, Laos and Cuba. Then there are also many nations that don't classify themselves explicitly as government-planned economies where the public sector plays a huge role in providing a wide breadth of basic services to the people, rather than the private markets doing so.

You can also make the opposite argument by pointing out China's growth only really got started with Deng's market liberalization reforms, which did the opposite of what you described.