In the 1990s, growth theory has incorporated imperfect competition in its investigations. This innovation has proven to be seminal: Cleviating from growth models with perfect competition, the new framework featured forward looking entrepreneurs. Firms maximize profits intertemporarily, i. e. their in vestment leads to instantaneous sunk costs and offers flows of future profits. Firms finance this investment by launching shares. The capital market is per fectly competitive, implying that the return on a share is equal to the return on a bond. As opposed to the capital market, the goods market...