Asobo knows as soon as the true top-notch study level airliners start to roll in, thousands of absolute enthusiast sim pilots will arrive and buy the Flight Sim 20 and the DLC´s and some really expensive yokes 
And several thousand more sim PPL fans will hesitate to defect to X-Plane12 when their urge for airliners is satisfied (which means a selection of the “typical Boeings”… a 737, the Jumbo Jet, a 777… this would be a good start to keep the true hardcore enthusiasts entertained for years.)
And when PPL-simmers get the same system depth and functions and engine damage and system simulations like accurate hydraulics accurate electrics etc. here on Flight Sim 20 they will feel a strong resistance wandering off to X-Plane again after having seen the gorgeous cloud formations the superb weather the great flight dynamics and the beautyful landscapes and sceneries and the oncoming raytracing FS20 has to offer.