The problem with Libertarianism is a question of motivation and intent. The question arises,"Why would anyone want to be selfish?", the primary tenet of Libertarianism.

The "selfishness" as espoused by Objectivists is unfortunately based on specious premises. It asserts that if everybody operated on their selfish intetests economically (laissez faire) that the system would equaluze itself and operate to the benefit of society.

The problem with this premise is that it assumes that all persons involved in the system will play by the rules. Futhermore, individuals will not attempt to manipulate the system behind the scenes to their own benefit and detriment of the overall system.

If nothing else, trump's Presidency is a standing refutation of Libertarianism. trump claimed to be working on Libertarian principles when he to refused to implement the DPA. (Defense Production Act) this last March and April. He claimed the market would solve the problem because companies would compete freely and meet the demand. It never happened, PPE never met demand needed (and it is still lagging in some places).

In my experience most Libertarians are the type of people who never liked sharing their toys. The type that would take their ball and go home in a huff because they couldn't get their way. They are people who despise accountability and hate to have to consider anyone else's feelings or property. They tend to be legends in their own minds and generally come up short in the empathy department (no wonder trump was the darling of Libertarians).

Libertarianism as espoused by Ayn Rand is short sighted and not a system that looks into the future long term. It is a get in, take what you want now and not worry about the overall health of system in which you are operating. Afterall, it will continually seeks its natural level.

If someone wants to really understand how "selfishness" is a natural condition in nature, but operates to the benefit of the group first, ones needs to look to evolutionary biology. The group (species) is more important to any one individual. This is anethema to Libertarians. Read Stephan Jay Gould to understand how selfishness operates positively in nature.