It's one of those series that has expanded so far, with favoritism towards its characters, that they even decided to drop the name "Yakuza" in favor of the Japanese title, since so much of it has little to do with being a Yakuza anymore. Honestly, I can't remember any game in which you've done actual Yakuza-like actions such as shaking down businesses, running loan shark scams, or executing hits. When you do end up making money, it's through perfectly legitimate businesses whose biggest problem is "thugs keep attacking us!"