Im usually pro-market ,but please bear with me
You gotta take into account that this is a wildly different situation we find ourselves in
1) economic factors:
First of all if the economic factors
Capitalism is great because it offers a flexible systems for dealing with scarce/limited resources and their distribution (keep this on mind)
Prices are broght by demand and offer,the more demand and less offer increases prices
Most socialist countries fail as result of planned economies being unable to cope with the calculation problem
The calculation problems refers to the idea that given the ever changing and ever shaping changes on offer and demand,trying to force down a specific plan will almost always come short
We face a inverse issue of the calculation problem,we dont have a lack of goods,we have too much of them to the point is impossible to sell and buy in the traditional way we know
We got matter kilns,teletransportation,super AI
so how is gonna a capitalistic economy work when there is esentially infinite offer in comparizon to demand?
Who are you even gonna dictate who owns what means of production?
Nothing stop a small group for buying materials and then building their own kilns and no longer ever having to buy anything in their lifes
Precious metals?
Mass producible with kilns
Transportation?
Teletransportation
Manufacturing costs and times?
Nano-tech and different other clark tech
Ultimately the same economic amd technogical factors that dictate the failures of most modern socialist countries,also dictate that the economy of a capitalist nation will simply not be able to work for us
When basically everything is free of cost,time and transport to produce to who are you gonna sell?
Is like trying to monetize air in earth or sunlight
2) the calculation problem and organization lf socialist market dynamics
All the examples of socialism you mentioned are those that work on the "centralized planned economy" that for reasons i already explained are awful to cope with the calculation issues
An alternative offered by other branches of socialist ideology is decentralized planned economy
To get it we gotta discuss the push vs pull logistics
A push logistic is when people on the ground are sent material based on expectations and calculations made by ghe government (there is 500 people,so you send 500 people worth of food)
Pull is when people om the ground requisition materials (a town realizes a increase on tropical diseases on their area,so they ask for more medicine to be sent to their town)
Alternative socialist models propose basing the production plans around pull logistics,with communities voting and doing requisitions of materials,and having input on the plan
You migth say "but what if the orgamization gets too big,humans cant handle or distribute too mucj information,they will suffer logistical lags"
>super AI's
>federalization (small communities can own their own local kilns,with the big scale issues being for building far reaching projects lile fleets,megastructures etc)
>being based around push logistics makes this economy act in a market-esque manner,comunnities ask what they have a need for,and sure they could ask for more than they need,but given the cost of production being so low is basically a non problem for us to basically bury them in supplies
So not much of a incentive for hoarding when production numbers sre so big that prices are worthless
3) private and personal ownership
As you know as you have read socialisg theory
Private ownership means who own the institutions,machines and terrain that are used to produce goods and services
Aka factories,buisness etc
Anything that needs teams of multiple people to operate and can be used to create valuable stuff for others
Personal property being stuff that is only relevant at individual level (like your toothbrush)
There is private and collective ownership of means of production
And as salty as this might hit many,you can have market economy with collective ownership
A Buisness can exist still,send and buy things regardless if is owner by a single man,a board of investors or a council where every workers gets a vote on the buisness direction
We do have real functional examples of the later with spain corporation "mondragon",farmers cooperatives etc
View: https://youtu.be/zaJ1hfVPUe8
This isnt a "small experiment that only works in pretty specific small scale conditions"
It has brough more than 11 billions on profit on 2021
This form of collective ownership with market dynamics is known as mutualism
4) conclusions:
Just as modern centralizrd planned economics fail because the technology and production capabilities simply arent there
A capitalistic country simplu wouldnt work when our technology allows us to simply ignore the market and live off the the grid
So at least for me the pragmatic option is to try and regulate and include everyone into the discussion of whats produced than have them fuck off to nowhere to live on their own without ever havong to buy or sell anything
Market economics still apply to stuff that will always be scarce (art,artesanal workshops making prototypes,entertainment etc),but those can be handled mainly by small buisness or big cooperatives