there is no such thing as general post-scarcity though. there is post-scarcity of certain needs but not general post-scarcity. So it's creator would still have reason to hoard certain benefits for themselves while distributing some for all.
It's generally meant that material scarcity becomes secondary to social wellbeing. Ie, material needs are so easy to take care of that the dynamics of social interaction undergo a fundamental shift, as they currently are strongly tied to material conditions.
Once you get past a certain level of wealth, the esteem of your fellow humans matters more than acquiring even more goods and services.
That's statistically speaking not very well supported. The most common element of those that are past a certain level of wealth is that they want more wealth, more power or both.