Marketing 6.0 represents a post-digital marketing paradigm where organizations move beyond basic digitalization toward intelligent, human-centric, sustainable, and trust-driven marketing systems powered by AI, automation, data ecosystems, and responsible innovation. While India has witnessed rapid digital adoption across industries, implementation of Marketing 6.0 faces deeper organizational and technological barriers than commonly discussed. This research paper examines the key challenges Indian organizations encounter while transitioning from digital marketing maturity (tools and channels) to Marketing 6.0 maturity (integrated intelligence, governance, ethics, and ecosystem orchestration). Using a conceptual and analytical approach, the study identifies major organizational challenges (leadership readiness, capability gaps, culture, governance, change resistance, ethical orientation) and technological challenges (data quality, interoperability, cybersecurity, privacy compliance, AI deployment constraints, legacy infrastructure). The paper proposes a structured framework—Marketing 6.0 Readiness & Implementation Model (MRIM)—that links readiness dimensions with implementation outcomes and offers practical recommendations for Indian firms and policymakers. The study contributes to the emerging literature on next-generation marketing adoption in emerging economies and provides actionable guidance for industrial implementation