He might develop a greater sense of humility. Without the Batman persona to fall back on, he has to face his own limitations as a person. For example, he may struggle to get people to listen to his ideas for change when he doesn't have the intimidation factor of Batman.
Sure. In the comics, Bruce Wayne is known for being a playboy. This fa莽ade allows him to blend in with high society while secretly fighting crime as Batman.
Another aspect could be that in some darker fanfics, if Bruce Wayne were to cross a moral line, perhaps Alfred would have to take more extreme measures. He might cut off Bruce's financial resources related to his vigilante activities. This would force Bruce to re - evaluate his actions and the way he operates as Batman. It's a way of punishing him to make him understand the importance of ethics even in his fight against crime.
Bruce Wayne is super rich in comics. His wealth is vast and comes from multiple successful businesses and inheritances. This enables him to have all the resources needed for his crime-fighting and to support Gotham City in various ways.
Bruce Wayne's wealth in the comics is astronomical. He has multiple business holdings, vast real estate, and endless financial resources to fund his crime-fighting endeavors and various projects.