>>1179421Fountain soda is literally printing money. Turns out huge bags of soda concentrate and tanks of bubbles to mix into their tap water is actually dirt cheap, the cost of that $2-$3 drink is in the ballpark of $0.20 cost to anyone selling soft drinks.
You literally can't consume your money's worth of fountain soda regardless of cup size or number of refills, there's a reason why McD is genius for doing $1 any size drinks since they still make money hand over fist with it.