Additionally, Foster has worked to expand Sweezy and Baran’s theory of monopoly capital in light of the current financially led phase of capitalism, which he terms "monopoly-finance Capital."
此外，福斯特一直在努力扩大斯威齐和巴兰的垄断资本理论在目前的金融主导的资本主义阶段，他称之为“垄断金融资本”。