It is important to understand that fictional characters, such as Tom and Gatsby, are creations of the author's imagination and serve a particular purpose in the story. The characters in a novel are not real people, and their actions and behaviors do not necessarily reflect the views or actions of the author or society as a whole.
In the case of Tom, it is possible that other characters in the novel are either complicit or indifferent to his behavior due to the social norms and values of the time period. For example, in the 1920s, when "The Great Gatsby" is set, racism and sexism were prevalent, and it was not uncommon for men to have affairs or engage in violent behavior towards women without facing significant consequences.
It is also possible that some characters may not be aware of the extent of Tom's behavior, or they may feel powerless to do anything about it. Additionally, the author may have deliberately portrayed Tom in a negative light to highlight the flaws and moral decay of the society in which the novel is set.
Ultimately, it is up to the reader to interpret and make sense of the characters and their actions in the context of the story and the world in which it is set.