「成功」的結果經常是以激勵人心的方式展現在制度改變中，但「沒有成功」的結果或許是更普遍的存在。然而，研究者卻經常忽略能動性展演結果可能是「未竟改革、未盡改變」的遺憾。為解開遺憾背後的模糊起因，本研究援引制度化歷程與制度工作視角，進行結構與行動之間的對話。並以貼附「夜市化」標籤的迪化年貨大街為研究對象，透過參與觀察和歷史民族誌的田野工作，蒐集文本資料進行分析。本研究發現，能動性機制中產生能動性損失，乃是源自於行動者、制度工作與場域脈絡這三要素發生內部解離與偏移。而能動性損失致使無法蓄積足夠的改變動量，徒留一個老病制度停泊在去制度化歷程的前緣。由此，點出理論與實務意涵。

The ‘successful’ result is inspirationally presented in institutional change; however, ‘unsuccessful’ outcomes are perhaps more prevalent. Yet research has overlooked why and how the regret of ‘unfinished revolution and incomplete change’ emerges from the agency performing. To unpack the ambiguous causes of this regret, this study adopts the theoretical lens of institutionalization and institutional work to engage in dialogues between structure and action. This study examines the Dihua Chinese New Year Bazaar, critically tagged as a ‘night market’ in Taipei, and collects data from field study with the guidance of participant observation and historical ethnography. This study reveals that the ‘agency loss’ emerges because the internal dissociations and discrepancies in actors, actions, and context within the agency mechanism. The agency loss then results in no accumulation of sufficient momentum to change, and keeps a deteriorated institution in the pre-deinstitutionalization stage. In closing, this study discusses theoretical and practical implications.