So the first hour, 100 people come, to find out, there was only one cake, and the first buyer got that, so now there is no more cake.
So now you have 99 dissatisfied people who are angry why they weren’t given any cake.
Isn’t it better to have fair dealings in business and all matters, so we don’t give people hope of being given something, when it’s already out of stock. That is what the sunnah has taught us. If we will be fair, Allah will increase the baraqah in our matters. Ya Allah, grant us to be fair in our dealings with others, at work, at home, with friends, and in all of our social circles. Aamen.