Two men walk into a grocery store to buy cereal
There are only two boxes left, but both are expired
Not wanting to go home with nothing to eat
One man picks up the spoiled cereal and purchases it
Only to come back home and have a bad taste in his mouth
The other man though refuses to buy either box
He has to go home hungry or ask a neighbor for bread
This goes on for some time as cereal sales plummet
Eventually the grocery store is forced to stock good cereal
Whose actions prompted them to make the change?
Did either of them have the right to complain about the service?