1. Growing corporate monopolisation There is some evidence, mostly relating to the USA, that there has been an increasing degree of concentration and monopolisation in the corporate sector, see, for example, Autor et al. (2017, 2019), Covarrubias et al. (2019), Crouzet and Eberly (2019) and Philippon (2019). If so, then that would lead to higher profit margins, a greater share of profits in national income than otherwise, and lower investment.
