Adam Smith was not anything like so called "Libertarians" make him out to be.
Smith saw the task of political economy as the pursuit of "two distinct objects": "first, to provide a plentiful revenue or subsistence for the people, or more properly to enable them to provide such a revenue or subsistence for themselves; and second, to supply the state or commonwealth with a revenue sufficient for the public services". He defended such public services as free education and poverty relief, while demanding greater freedom for the indigent who receives support than the rather punitive Poor Laws of his day permitted. Beyond his attention to the components and responsibilities of a well-functioning market system (such as the role of accountability and trust), he was deeply concerned about the inequality and poverty that might remain in an otherwise successful market economy. Even in dealing with regulations that restrain the markets, Smith additionally acknowledged the importance of interventions on behalf of the poor and the underdogs of society. At one stage, he gives a formula of disarming simplicity: "When the regulation, therefore, is in favour of the workmen, it is always just and equitable; but it is sometimes otherwise when in favour of the masters." Smith was both a proponent of a plural institutional structure and a champion of social values that transcend the profit motive, in principle as well as in actual reach.
And...
Because Ayn Rand was a radical who was utterly Anti-Soviet being literally a refugee, so she went to the other idiotic extreme.
Thus in the US "Libertarian" basically means Milton Freedman economic gangster types and Ayn Rand fanbois.
Libertarians are Left wing types who oppose Marxism historically and governments based off of exploitative power structures..
The word "Capitalism" was actually coined by Karl Marx -I am not kidding
Right wing Libertarians are baffling with their childish views of me me me.
Granted, first time life puts them out to dry there is no such thing as a right wing Libertarian.