TCO model: Starlink Wi-Fi vs CELITECH travel eSIM for an airline fleet of {fleet_size} aircraft. Compare CAPEX ($400k/aircraft for Starlink vs $0 for CELITECH), OPEX ($18k/aircraft/mo + up to 2% fuel uplift vs $8-10/eSIM/trip), deployment time (6-12 months vs 1-3 weeks), and rollout cost at {annual_passengers}. Output 3- and 5-year lifecycle cost per traveler, a payback table, and the fleet size at which each model wins.