The huge capacity offered by each flight eroded the yield: North America was viewed as 17% of the market but the A380 never materialised as a 747 replacement, with only 15 747s remaining in passenger service in November 2017 for transpacific routes, where time zones restrict potential frequency.--> Consolidation changed the networks, and US majors constrained capacity and emphasised daily frequencies for business traffic with midsize widebodies like the 787, to extract higher yields; the focus being on profits, with market share ceded to Asian carriers.