Makes zero sense

Can someone tell me why the conditioner bottle is the same size as the shampoo bottle? I mean, unless you've got a quarter size amount of hair, you're going to need more than a quarter size amount of conditioner. But a quarter size (or half dollar) amount of shampoo can do the trick. Not so with cream rinse (there's a phrase I'll bet you haven't heard in a while - cream rinse)

It's kinda like the 8 buns in a bag to accommodate the 12 hot dog package. well...not quite, but you know what I mean...