1 minute ago, Tramp Graphics said:He didn't because he couldn't . He didn't have the moral, nor legal right to free Shmi. And the very fact that Shmi herself accepted this without issue bears this out. And, remember, Qui Gon himself said that he was not there to free slaves .
You do realize that an organization might say you don't have an obligation to do something but you can still feel a moral obligation to do something, right?