They used to be the biggest publisher on Stadia as well and they couldn’t have handled Stadia’s shutdown any better than they did:
Even though Stadia refunded all purchases, Ubisoft still granted each owner of their titles on Stadia the full, non-plus-ultra-deluxe PC version of each of those game on their launcher. Automatically, for free, and without talking much about it.
Most predatory in-game shops create FOMO by offering exclusive items for short time windows only. Or they offer massive, often personalized, timed discounts on overpriced items. Or they offer expensive purchases of previously timed exclusive in-game items.
I’d argue that it’s not impossible to run a “no FOMO” cosmetics shop, but it probably wouldn’t be very profitable. No idea how Inkbound’s shop worked, though - I never played the game.