Talk politics.

The irony of the laissez-faire system is that in practice it will every single time lead to unfree markets dominated by giant conglomerates which are better-suited to merge with all their rivals, as given complete freedom to rule the market more wealthy and powerful corporations simply rig the system in their favor, destroy small businesses with impunity, and in the most exaggerated cases become quasi-governments in their own right (see: all proprietor-colonies of which the British East India Company and the United Fruit Company are the most notorious examples). The reason for this is of course that without any means to limit the pernicious effects of inequality inequality translates into the needs of the few outweighing any influence by the many.

But mention this fact to libertarians......