In Breaking Bad only the general idea, the main character turning from protagonist to antagonist was there from the beginning. They filled in the middle part as they went along.
That's not really a comparable narrative arc though. Breaking Bad is a character drama, not a mystery box structure. With only some limited exceptions, which clearly were planned out in advance of their resolution, the driving question of Breaking Bad is "what are the characters going to do", not "why/how did that thing happen".
