Netflix faced questions about the shifting media landscape during its earnings release, held a week after WarnerMedia announced plans to launch a competing service in a move that follows in the digital footsteps of The Walt Disney Co. One issue, in particular, loomed large for Wall Street: What will Netflix do to fill the hole in its content library, once Disney and WarnerMedia claw back their movies and television shows for their own on-demand services? “Content like Frie…