Why did the prisoners never try to escape the Palace of Corrective Detention in Anthem by Ayn Rand?

In "Anthem" by Ayn Rand, the prisoners did not try to escape the Palace of Corrective Detention because they were conditioned to fear disobedience and independent thought. The government in the society of Anthem strictly controls and suppresses individuality, making escape seem impossible or too risky. Additionally, the lack of knowledge about the world outside the controlled society may have made the prisoners resigned to their fate in the Palace.