As we predicted in our report on the Market for Airline Passenger Services Systems 2016, Warburg Pincus and Mercator have continued to invest in companies within the travel sector. Last year saw the successful purchase of revenue management provider, RMS Inc. and now with revenue accounting specialist, Accelya. The combined share for Mercator and Accelya in revenue accounting will be close to 20% as measured by airline passengers boarded.