If China really is a socialist country or one pushing towards communism, why do you think they are waiting to push more directly in that direction? What is to be strategically gained from capitalizing your economy, essentially going backwards for 50 years instead of continuing to push for communism?
A calculation that we are not privy to that roughly balances productive capacity, China's strategy for international influence and security, and socialism. A calculation that prioritizes sustainable interventions and avoids sweeping changes that lack a scientific basis, where scientific is relative to current conditions and the result of economic experiments. A calculation that also has to balance current party factions while attempting to undermine those opposed to Xi's.