International airlines are all-in on fancy first-class seats, even as US carriers focus only on business for long-haul flights

International airlines are all-in on fancy first-class seats, even as US carriers focus only on business for long-haul flights

At least nine airlines are expected to launch new first-class in the coming years, starting with Lufthansa's new "Allegris" cabin on November 9.Peter Kneffel/picture alliance via Getty ImagesUS airlines have ditched first class for improved business cabins to optimize space and revenue.Some global carriers are adopting a different strategy as demand for more onboard luxury spikes.Ultra-wealthy travelers will book first class on routes that priva…