Social media algorithms now function as gatekeepers to market access. Brands that once relied on organic reach face systematic suppression unless they align with platform economics. This shift transfers pricing power from advertisers to intermediaries, creating structural dependency that reshapes how companies allocate marketing budgets and measure return. The book examines three operational challenges: algorithmic opacity that prevents predictable campaign outcomes, platform rule changes that invalidate existing strategies overnight, and the rising cost of maintaining baseline visibility. It explores how companies can build buffer mechanisms-owned distribution channels, cross-platform diversification, and metric systems that survive policy shifts-without abandoning social infrastructure entirely. For businesses operating in fragmented digital ecosystems, the question is not whether to participate but how to participate without becoming structurally vulnerable. The analysis focuses on preserving decision autonomy while extracting value from platforms designed to maximize their own capture rates.