Why do you think communism is impossible? It promotes solidarity, mutual support and the satisfaction of needs. Besides, it would just require everyone to work together, on whatever they can and want. With today's technology, many tasks could be automated, which would free the way for leisure. Members who want more than they need, could get it by themselves or exchange it with others who wish to do so; those who do not want to collaborate, could not do so understanding that they would not get that benefit from the community.
This page might help clear the confusion: https://en.m.wikipedia.org/wiki/Libertarianism_(disambiguation)
Thanks a lot for the information, it's nice to have a space to chat. Since this current conflicts with historical anarchism, for example, all the authors you mention were against private property. Since capitalism is an economic system based on the private ownership of productive goods for the creation of goods or services for commercial purposes; and liberalism (classical) is a philosophy that defends individual freedoms, private initiative, free market economy and the limitation of state powers. It would be appropriate to call it anti-state capitalism or radical liberalism. One detail is that in practice these positions could coexist in their communities, since both defend freedom of choice and, therefore, both are against state oppression.

Why the nineteenth century? I understood that this political current appeared during the second half of the twentieth century within libertarianism.
Source: Ronald Hamowy, Editor, The Encyclopedia of Libertarianism, SAGE, 2008, pp. 10-12, p. 195
El mejor truco de vida para la felicidad: Trabaja en la mierda que importa.
No importa en lo que trabajes, enfrentarás luchas, dĂas de mierda y (si tienes suerte) tendrás algunos momentos gloriosos.
Si vas a hacer el trabajo, haz que cuente como algo que empuja al mundo hacia adelante en la direcciĂłn que crees que deberĂa ir. Hará que las partes duras se sientan menos duras y hará que la gloria sea mucho más dulce.