Citizens pay different prices but all consume the same quantity of public services, while in the?

The Answer of this question can be summerized in 5 points and they are
1st :- public good/service is between whole population of that nation and it must be provided samely
2nd :- in market there are two sides sallers and buyers where in govern't don't
3rd :- According to the market system citizens have the choice to choose what they want
4th :- In public service providing citizens must take what they are given by the government
5th :- Government is considered as a mediator among whole population