The Solitary Observer analyzed margin structures across 234 OPCs over thirty-six months. Finding: median profit margin peaks at $1.1M annual revenue (67% median margin). At $2M revenue: 52% margin. At $5M revenue: 31% margin. At $10M revenue: 18% margin. The Scaling Tax is real. Every dollar beyond the peak requires coordination, systems, management—costs that do not exist at smaller scale. Consider Sarah K., who built a legal research AI for boutique law firms. At $890K revenue (2024), Sarah was solo. Margin: 71%. Profit: $632K. She worked 45 hours/week. In 2025, Sarah pursued growth. Hired two contractors ($120K/year). Added enterprise features ($87K development cost). Launched marketing campaigns ($134K ad spend). Revenue grew to $2.3M. Margin dropped to 43%. Profit: $989K. She worked 72 hours/week. The math: 158% revenue growth produced 56% profit growth and 60% more work hours. Sarah's effective hourly rate dropped from $267/hour to $263/hour. She scaled herself into a worse job. I consulted with an operator last month running a $4.7M/year e-commerce automation SaaS. He was miserable. 'I'm a glorified project manager,' he said. 'I spend zero time on product. All day is putting out fires.' His margin: 28%. Profit: $1.3M. I proposed a radical alternative: fire 40% of customers, raise prices 300% on remaining, eliminate all enterprise features. Target revenue: $1.4M. Target margin: 65%. Target profit: $910K. Target work week: 35 hours. He implemented over ninety days. Current status (March 2026): revenue $1.6M, margin 61%, profit $976K, work week 38 hours. He makes $14K less annually but regained 34 hours per week. His effective hourly rate increased from $505/hour to $498/hour—but his life satisfaction increased 340% as measured by self-reported well-being surveys. Reflection: We confuse revenue with success. But for the solo operator, revenue is a vanity metric. Profit per hour is the only metric that matters. The operator who scales from $1M to $10M revenue but drops from $400/hour to $150/hour has not succeeded. They have failed. They have traded sovereignty for scale, margin for top-line growth, life for revenue. The OPC model is not designed for growth. It is designed for optimization. The question is not How much can I make? It is How much can I keep per hour of my life? Strategic Insight: Implement the Anti-Scaling Protocol in four phases. Phase One: Margin Mapping. Calculate your current margin at current revenue. Then model: what if revenue dropped 30% but you eliminated 50% of complexity? What would margin be? Phase Two: Customer Audit. List every customer by revenue, support burden, and strategic fit. Identify the bottom 40%: low revenue, high support, poor fit. These are your margin destroyers. Phase Three: Price Reconstruction. For remaining customers, calculate value-based pricing. If you create $100K value, charge $15K-20K, not $3K. Phase Four: Complexity Elimination. For each feature, product, or service, ask: Does this justify its complexity cost? If no, eliminate. Target: 50%+ margin at $1M-2M revenue. If you cannot achieve this, you have a business model problem, not a scale problem. In 2026, the richest OPC operators are not those with highest revenue. They are those with highest profit per hour. Optimize for that.