Our economy favors real estate owners maximizing their profit from owning property, regardless of how inaccessible that makes housing to a large portion of the population.
Also educated, healthy populations tend to have fewer kids. This isn't an overnight fix, but a long term goal. So the first move is to learn to share like the toddlers we are.
It's not easy and we dont have a solution yet. Greed is fundamental.
As in, taxation + inflation is not enough? We spend 27.9% through government (a "shared resource"). How much more should we disincentivize work?
I think it'll have to be phases. The first goal would be fewer musks/besos/gates etc and spread that wealth around.
Eventually maybe we succeed in automating most of the menial work and let humans collective imagination drive the future.
Greed though. That's our races great filter.
All populations we have which come even close to the living standard a post scarcity world would have are below replacement level and the closer they come, to lower the amount of children. I wouldn't see why you would assume a growing population.
The ultimate scarcity is the scarcity of arable land and raw materials to host a human population. Some of the major conflicts over the 20th century in this area have revolved around land reform and land ownership, whether it was breaking up feudal estates and redistributing land to peasants (Russian Revolution) or expansionist ideologies (Germany's 'Push to the East' for 'lebensraum', aka 'settler colonialism' which was also a feature in America's 'Manifest Destiny').
The United States is again setting the stage for such conflicts with the majority of young people being priced out of the housing market. Homeownership rates shot up after FDR's New Deal reforms, and there was a brief peak in 2004 before a sustained collapse that showed some signs of recent recovery:
https://dqydj.com/historical-homeownership-rate-united-state...
It's fairly skewed by age and this increasing (probably high student loan debt being a major factor), i.e. homeowners are getting older and fewer young people are buying homes:
https://ipropertymanagement.com/research/homeownership-rate-...