Some companies realized you could charge money for them and thus was born the pay to win version of free to play games.

Consider Contra's 99 lives cheat code vs candy crush's extra lives for cold hard cash.

Though by far the most popular is a version of starcraft's instant build cheat coupled with a persistent RTS game.

As to traditional cheat codes, there more common in RPG's. Skyrim console being a great example of a classic cheat codes.