The idea that we need to transform the economic system in order to avoid environmental catastrophe is growing in popularity. The degrowth movement is currently the most prominent movement for post-capitalist economics, and it is true that getting past the imperative for economic growth is an important element of the needed economic transformation. But rather than simply going against the current hegemony of economic growth, we must create a holistic new system with which to supersede today’s capitalist system. To do this, we must find replacements for each of the major components of the economic system. A core component of capitalism for which we need a replacement is the development dynamic of capital accumulation for profit.