In what way do the animals' dreams for a better life get thwarted?

The animals' dreams for a better life are primarily thwarted as leadership becomes corrupt. In "Animal Farm," the initial idealism of the revolution is gradually undermined by the pigs, particularly Napoleon, who seeks to consolidate power for himself and his inner circle. Rather than working toward the collective good of all animals, the leaders begin to exploit their authority, changing the original principles of Animalism to benefit themselves. This corruption manifests in numerous ways, including the manipulation of language, the alteration of the commandments, and the use of propaganda to control and mislead the other animals. The betrayal of the revolution's foundational ideals, such as equality and shared prosperity, leads to disillusionment among the animals, thus thwarting their dreams for a better life.