In what way did Benito turn a blind eye to Tolliver's business dealings in the story, The Last Lovely City?

When Tolliver approached Benito about buying run-down hotels with him, Benito agreed and remained Herman's business partner, even when it became clear that the hotels were being used for prostitution. Benito made a point of not finding out any more than necessary about the hotels because he was making so much money from them.