dnd 5e – With starting equipment, do bolts come with a case like arrows come with a quiver?

I have been rolling up a warlock and I noticed that the starting equipment states (emphasis my own):

You start with the following equipment, in addition to the equipment
granted by your background:

(a) a light crossbow and 20 bolts or (b) any simple weapon

(a) a component pouch or (b) an arcane focus

(a) a scholar’s pack or (b) a dungeoneer’s pack

Leather armor, any simple weapon, and two daggers

Meanwhile, when I rolled out a ranger previously, it said:

You start with the following equipment, in addition to the equipment
granted by your background:

(a) scale mail or (b) leather armor

(a) two shortswords or (b) two simple melee weapons

(a) a dungeoneer’s pack or (b) an explorer’s pack

A longbow and a quiver of 20 arrows

Does this mean that characters who start out with crossbows do not get the bolt case? If so, why would that be?