A lot of things tend to make us feel that we are not individual. There are forces all around us which work to make us feel that we are not unique. The 20th century didn't invent, but it really pushed, the idea of the factory . Every part identical. Every piece the same.
Manufacturers go to incredible lengths, to make sure that there are no differences.
If a part is off by a couple of thousandths of an inch, it goes out into the trash. Computer chips are thrown away if they have mistakes that can only be seen under a microscope. Marketing works the same way. Somebody figured out that they could make a lot of money, if everybody in the whole country ate exactly the same kind of french fries. Somebody else figured out that they could make a whole lot of money, if they could get ten million people to wear the same kind of sneakers.