The burgeoning interest in the metaverse prompts a thorough examination of its adoption determinants. While the Technology Acceptance Model (TAM) has been extensively leveraged for this purpose, disparities in findings across demographics, industries, and cultures exist. Our study conducts a comprehensive meta-analysis, consolidating diverse research to deepen understanding of metaverse acceptance. We assess TAM's efficacy across industries, cultures, and user categories through moderator analysis. Additionally, we propose a theoretical framework based on TAM variables tailored to the metaverse. The study yields theoretical implications and identifies crucial factors influencing user adoption, facilitating effective marketing strategies in the ever-evolving metaverse environment.