One Person. One Model. One Company. The Rise of the 1-Person SaaS — and Why Every Domain Expert Is Now a Software Business.

Maor Shlomo built Base44 in six months, solo, during a war, with ADHD and $0 raised — then sold it to Wix for $80M cash. 90% of the code was written by Claude. Fine-tuning a 7B LLM on your domain now costs $1,000–$3,000 — down 30,000× from GPT-4's $100M training cost in 2023. The EMAR Loop (Expertise Model API Revenue) is the framework. At 1,000 monthly queries, a GST consultant earns ₹2.16 crore per year at 85%+ margin from infrastructure costing ₹15,000/month. SaaS stocks lost $2 trillion in market cap in 30 days in early 2026 — not because AI replaced the software, but because AI replaced the humans who used it. The 1-Person SaaS operator skips the entire SaaS stack. The moat is proprietary training data, not the model.