This may be due to the fact that the retailers are heavily threatened by government action, so they take no action to increase prices.
Contrast this with the must-have Christmas toy, which may otherwise be seeing similar unanticipated demand and suddenly the same retailers are incredible pricing experts.
The factories will need to maintain long-term relationships with these retailers and they may also have similar threats from government action.
More likely is that whatever slack there is in the supply chain will be exported to countries which have no such price control policies, because price-control policies do not address the underlying issues of supply and demand.