I think the character does tend to suit an episodic thing, because what's fun about him is that he doesn't care about anyone else, and it's very difficult for a main character - a lead character - in a movie to not care about anybody else. ↗
Making a million dollars is the simplest thing in the world. Just find a product that sells for $2,000 and that you can buy at a cost of $1,000, and sell a thousand of them. ↗