I assume it’s because it is hard to refund gamepasses. Roblox should add negative robux or a debth system of some kind to avoid an infinite robux glitch, and by that I mean; (gamepass>alt account buys> gamepass deleted>alt account refunded>owner account not charged>repeat) this could lead to problems. However if the owner account was to be charged and let’s say the debth system still didn’t exist the infinite robux glitch would be back; (gamepass(ex. 100 robux)>alt account buys> marketplace fees> 70 robux to owner> owner spends 20 robux>gamepass deleted>alt account gets 100 owner loses 50 (fair/unfair?)).
I agree with the fact that gamepasses or paid games that got deleted should be refunded and I hope that Roblox sees this.