In social movements and contentious politics, the factors determining success or failure of a movement remain contested since different scholars tend to argue differently. As a contribution to this debate, this paper draws on two cases representing the relative success and failure of movements targeting the government of Cambodia and foreign joint venture investments to address the communities' grievances. The paper reveals that, while other factors such as strategies, resource mobilisation, networks and corporate behaviour remain necessary to the debate, the variation in outcome is essentially determined by the patron-client network, a political dynamic employed by the neo-patrimonial rulers to cling onto power.