Sobre la controversia de si es posible el capitalismo en una economía estacionaria o en decrecimiento es interesante la opinión de uno de los postkeynesianos más destacados, Marc Lavoie. Su conclusión es que probablemente no sea posible, en el sentido de que la acumulación de capital sea la base del sistema económico:

“In a no-growth society, because wealth and income distribution turn
out to be a zero-sum game, it is obvious that it becomes even more urgent to resolve the issues related to the concentration of wealth and to rising income inequalities. It will come as no surprise that distributional issues in a no-growth society would be even more important than they are in a growth society. It then appears that a full stationary state economy could probably not be organized with capital accumulation for itself as its core basis. Consequently, it would not be a capitalist system.”

También es interesante su conclusión de que el sistema financiero tal y como lo conocemos tampoco es compatible con una economía estacionaria, aunque sí que concluye que sería posible la existencia del interés y del dinero-deuda si el sistema financiero distribuye todos los beneficios en forma de dividendo:

“Another way to put this is to say that our article supports the argument that compound interest debt-based money is incompatible with a stationary economy, but interest bearing debt-based money does not necessarily imply compound interest. In such a stationary economy banks (and firms) would see their equity funds remain constant, meaning that they would distribute all their profits in the form of dividends.”