Rather, he ground away his moral fiber moment by moment, throwing good effort after bad. There were lots of tines he could have stopped and just taken a minor loss overall, but he wanted to _win_.
Jesse was the only character with an upward trajectory. He started as a total loser, and was able to improve himself though gaining mastery and through finding responsibility.
He still fucked it up though, and was only able to just barely escape.
Skyler was self-centered the entire show. Walt's cancer was about her. His criminal career was about her. His downfall was about her.