Does anyone know why Amazon mandated they migrate the platform to Amazon? This multiyear project appears to be a sinkhole to me. Multiple years where very littl

Does anyone know why Amazon mandated they migrate the platform to Amazon? This multiyear project appears to be a sinkhole to me. Multiple years where very little changes in your company except for a backend migration to Amazons platform. Whats the value add? Would it not be less costly to keep the system and create a migration to any necessary systems?