Generate a full, in-depth guide on how to build a 'Content Moat.' The guide must be an advanced SEO and content strategy playbook. It should include detailed sections on: 1. What a Content Moat is and how it creates a long-term competitive advantage. 2. A step-by-step guide to conducting a 'content gap analysis' to find opportunities. 3. The 'Pillar and Cluster' model for organizing content to build topical authority. 4. Strategies for creating proprietary data, tools, or research that competitors cannot easily copy. 5. A plan for interlinking content to create a powerful internal linking structure. Please include a supportive disclaimer.