Using bitcoin to make purchases in a #Bitcoin economy would be exactly like using V-Bucks in a Fortnite economy or Robux in a Roblox economy. 

V-Bucks are the in-game currency for Fortnite. You can use V-Bucks to purchase the following items: Outfits, Pickaxes, Wraps, Emotes, Battle Passes, Gliders, and Contrails.

Robux is the virtual currency used in the online gaming platform Roblox. It can be used to purchase a variety of in-game items and upgrades, including: Avatar accessories and outfits, Special abilities in games, Weapons, Other objects 

 "All of this goes to show that if left to their own devices, players will spawn vast economies as long as the game mechanics allow for it." 
https://dergigi.com/2022/10/02/bitcoin-is-digital-scarcity/ 

 Like life 

 This article was huge for me. I absolutely loved it.