The Baby Ruth candy bar was not named after a baseball player but the daughter of US President Grover Cleveland.
The Three Musketeers bar started out as a single bar with three flavors easily divided into three pieces. Then it was just one flavor, but indented across the top so each of three segments could be broken off. Much later, when candy bars because smaller (at the same price or greater) because of the rising price of chocolate, there was only one division and the slogan became "Big enough for a friend and you." Now they no longer bother to pretend it is big enough for more than one person.
In similar fashion, when many US soda makers switched to metric sizes, the price per unit did not go down, but the amount of content in each bottle got smaller. When there was a rise in sugar prices, soft drink prices also went up. Not sure they ever came back down, but curiously– I cannot figure out why but maybe you can-- "diet" sodas, which are sugar free, also got a price increase at the same time.