“…In our 2018 article (and a previous working paper [Marquette & Peiffer, ]), we reviewed the literature on corruption and collective action—including, but not limited to Persson et al (). Contrary to our original expectations, we found that while the arguments put forward by Persson et al had “intuitive plausibility,” to quote Sparling (), unpacking the theory and its application revealed important challenges with regard to both the theory as posited and its potential application in practice. While far from dismissing the ideas put forward by Persson et al and others, in our article we nonetheless found that (a) the case against principal–agent theory had not been proven and that there was a risk of throwing the baby out with the bathwater; (b) that the application of collective action theory was incomplete [which Persson et al (, p. 3) acknowledge, though they do not explain why or offer a solution]; and (c) that when “the benefits of passively or actively engaging in corrupt activities seem to outweigh the costs” (Persson et al, , p. 463), the most important question to follow, surely, is why ?…”