Like the Daoist Ancestor, the Supreme Sage, and the founding giants of the Mo Family, they blazed their trails through thorns and thistles, transforming their own minor paths into the Great Dao under the heavens. They had no blessings from predecessors to follow; in their eras, no ancient sages had come before, and none would come after. They themselves were the eternal pioneers on the path beneath their feet, and thus could only move forward, forward, forward.
This is also why the founding patriarchs of each sect are cultivators whose cultivation reached the skies, even the historical pinnacle of their factions, with no later peers able to surpass them.