This document explores how firms may react to limits on bio-physical flows necessary for achieving sustainability, highlighting the need for a paradigm shift in understanding the relationship between economic activities and natural ecosystems. The author discusses various theories and approaches, including backcasting, to analyze potential pathways firms could take to adapt to implementation of limitations policies aimed at bio-physical flows without causing widespread economic hardship. The paper also addresses the significant challenges and questions for both firms and policymakers in initiating these changes and encourages further research on the subject.