Key to the economy would be ISK, a currency players can purchase with real money, as well as devs having little oversight to whatever is happening to the market - leaving it completely player-driven.

Source: https://gamerant.com/mmos-most-intense-in-game-economies/

The player-driven economy in this 2014-released game encourages the sale of looted treasures and crafted collectibles.

Source: https://gamerant.com/open-world-games-player-driven-economies/

With both games delving into an enthralling player-driven narrative, it's easy to compare Star Wars Knights of the Old Republic 2Star Wars Knights of the Old Republic II: The Sith Lords have the same developer, Obsidian Entertainment.

Source: https://gamerant.com/outer-worlds-games-similar-recommendations/