The headline summed it up.

The changeover of the ML who was initially concerned with himself, his ambition and the money he can get in the beginning is typical but the character is interesting in that he's physically talented, smart, discerning and perceptive. He could read the room and the people he interacted with and immediately get on with them.

The FL is as capable and on par with the ML so it's fun to watch them get together when they realised they have the same goals. Their journey has its ups and downs but they overcame to triumph so it's satisfying to see them seal their relationship at the end.