when i talk about bitcoin fluctuations I mean long term, if say a game (only using it as an example as i am developing one to use this system as a test) sold upgrades/misc items for bitcoin.

Users would buy these items but if bitcoin fluctuates -40% (not saying it will just hypothetical) many users who bought theese items would feel less inclined to invest/purchase again OR possible become annoyed at the game and blame the developers for the fall. oppositely if it rises NEW users who haven't invested into the item will feel the same for the opposite reason. have a static crypto currency solves this while also solving the currency issues that companies have when making/developing systems that handle peoples money.