Rolls-Royce has declared that liquid hydrogen will not replace kerosene for narrowbody to widebody aircraft before 2050, despite advancing hydrogen propulsion capabilities. The aerospace division identifies market maturity as the primary bottleneck, citing unresolved infrastructure gaps, cost barriers, and regulatory hurdles that prevent commercial deployment. Operators must plan for continued reliance on turbine technology and kerosene for the next 25 years while investing in hydrogen infrastructure for post-2050 fleets. This strategic timeline refines previous broader claims about immediate hydrogen potential, emphasizing that technical capability alone cannot bridge the gap to market readiness. The company remains committed to hydrogen as a long-term replacement candidate, actively participating in H2-Aero initiatives to align industry, academia, and government efforts toward decarbonizing aviation beyond 2050.