As a seasoned CMO, analyze the future of AI-generated content in marketing by 2030. Focus on [TARGET AUDIENCE], [INDUSTRY TRENDS], and [ETHICAL CONSIDERATIONS]. Provide a detailed strategy on how brands can leverage AI for personalized content, automation, and ROI optimization while maintaining authenticity. Include case studies, potential risks (e.g., deepfakes, bias), and KPIs to measure success. Format your response as a 5-year roadmap with quarterly milestones.