Purpose This paper aims to analyse how processes of institutional change in environments of institutional 'voids' affect smallholder farmer market access in Zambia and Malawi, and explores the role of different dis/enabling institutional agents and logics. The authors examine this in the context of two divergent routes of institutional change – one externally imposed and the second driven from within the ecosystem itself. The authors consider how these different institutional processes impact upon smallholder farmers and how they are able to adapt to these changes. Design/methodology/approach A qualitative research approach is used which lends itself to an analysis of multiple institutional logics that is based upon the multiple positions of market actors. It uses a comparative case study design methodology focused on two broad cases of smallholder farmers in Zambia and Malawi. Findings The research demonstrates the tension that multiple institutional logics can create especially amongst those most vulnerable particularly where these are not embedded in local realities and mindful of social settings. Originality/value It contributes to the understanding of poverty alleviation in rural developing regions, on overcoming institutional voids, market inclusivity and the role of social entrepreneurs and intermediaries, and builds on the perspective of markets as social spaces for economic exchange.