The gods granted them that magic. I don't know why magic and the first dragons were tied together in the first place, but they were. If they lived long enough for to witness their offspring to hatch, they would have been able to pass the magic down for others to obtain, it but was not meant to be.

[ Which meant that Aurican had the capability of magic but lacks the means of it - a despairing notion, as Aurican want nothing more than to return magic to its rightful place in the world. ]