But I'd assume that they're preparing for some sort of winner-take-all market in model quality where if they don't do anything the winner will be aggressive, hostile and American. Likely trying to push the Chinese economy back to the year 2000. If that is the starting point either the Chinese have to win the market (unlikely) or squeeze the profit out of it to make winning the market meaningless.
Publishing high quality open models is a well known tactic for profit squeezing. Being 2nd place with the same business model as the front-runner is a losing strategy in a winner-take-all market so they aren't going to bother with that. But if they can commoditize the model, their superior energy costs and likely coming chip manufacturing wave will hopefully give them a big advantage.