But everyone was NOT on the ground - they were getting summoned, they were on a bird from FP to FP, sometimes skipping out entire zones while flying. On the ground, if you are engaged in combat, nothing has changed. Traveling from A - B was typically done via FP, and the only exception being heading somewhere you did not have the FP for yet, as in somewhere you had not been before. Considering that flying unlocks at max level, you will most likely have nearly all / all FP by then anyway, so again, nothing has changed.
- - - Updated - - -
Fly after them - follow them - just like you used to on the ground. If they chose to ride to a FP - the fight was over. If they chose to ride to a base - the fight was over. If they chose to stealth, the fight was over. If they chose to simply ride along a road, the fight was over. Nothing has changed.