  In this paper, we introduce the third party to achieve the Stackelberg
equilibrium with the time inconsistency in three different Stackelberg games,
which are the discrete-time games, the dynamic games, and the mean field games.
Here all followers are experiencing learning-by-doing. The role of a third
party is similar to industry associations, they supervise the leader's
implementation and impose penalties for the defection with the discount factor.
Then we obtain different forms of discount factors in different models and
effective conditions to prevent defection.These results are consistent and the
third party intervention is effective and maneuverable in practice.
