As noted directly above, we have added reference to Fecher, Freisike and Hebing, 2015 throughout the Results and Discussion, and to European Commission report, Wilsdon et al., 2017, and Borgman, 2015, to the Discussion. We do feel that our results are largely consistent with those reported by others. In the discussion however, we highlight the unique context of the MNI’s open science initiative, and reflect on how this may influence some of our findings.