Retail as a Service (RaaS) turns underutilized stores, staff, data, and media into a platform others can rent. From 2025 to 2030, U.S. operators evolve from one‑brand networks to curated, multi‑brand ecosystems that monetize shared infrastructure fulfillment bays, clienteling apps, retail media, and event spaces while giving emerging brands turnkey access to scale. We model North America RaaS platform spend rising from ~US$5.1B (2025) to ~US$12.3B by 2030. Value is created by lifting store‑hour utilization, pushing more orders per site per day, expanding retail media yield, and compressing CAC payback for participating brands. The operating model has four loops. (1) Curation: category‑aware onboarding and performance SLAs keep the mix coherent and profitable. (2) Orchestration: OMS/WMS/clienteling unify inventory, appointments, services, and pop‑ups; capacity‑aware pricing sets the right fees. (3) Monetization: fulfillment fees, retail media, subscriptions, and services (alterations, consultations) diversify revenue. (4) Quality & trust: NPS, returns, and service SLAs safeguard ecosystem reputation. Done well, median programs can raise store‑hour utilization from ~48% to ~67%, throughput from ~220 to ~410 orders per site per day, gross margin from ~24% to ~32%, and partner retention from ~68% to ~79% by 2030 while compressing CAC payback from ~13 to ~8 months.