Edit: Changed title to be more accurate.
Also here is the summary from Wikipedia on what Post-scarcity means:
Post-scarcity is a theoretical economic situation in which most goods can be produced in great abundance with minimal human labor needed, so that they become available to all very cheaply or even freely. Post-scarcity does not mean that scarcity has been eliminated for all goods and services but that all people can easily have their basic survival needs met along with some significant proportion of their desires for goods and services. Writers on the topic often emphasize that some commodities will remain scarce in a post-scarcity society.
It’s because we’re bad at distributing resources equally. Don’t really care if you don’t like the fact I used the word capitalism.
The question is; is it capitalism that causes our inability to properly allocate resources or is it just the fact that humans are bad at allocating resources? What economic system would incentivise the equal distribution of said resources?