Historically, there have been a few examples of radical egalitarianism in revolutionary movements but like the Paris Commune they generally are short-lived – or never even become the dominant force, e.g., the Levellers during the English Civil Wars. It was the accomplishments of the CNT/FAI in organising one million members in 1930’s Spain that inspired me to become a libertarian socialist. However, since then I’ve come to the conclusion that the more egalitarian and democratic a society is, the more vulnerable it is to external and other threats.
The problem with anarchism is never infighting it just wasnt good at defending itself from external military threats.
Stalinism on the other hand, was a perfectly crafted machine for dealing with external military threats, but wasn't very nice to live under.