Because they are mostly being showed propaganda promoting the personality of Kim Jong. And he doesn’t want them knowing the truth about him
A poll tax was imposed on voters. I have found the poll tax receipt my mother paid back in the 1960s. Poor people could not afford to pay a tax to vote, because their income was so low.
Answer:
They allowed people to trade goods, sell items, communicate, and much more. Today we have online websites where we can buy things with a click and people are always trading items and communicating over the internet, much like the system of the Silk Roads.