No shit. That's my point, dear. We can't with the current level of technology. Gee, where did you and I see that before?
Try reading the post again.
I said "No socialist country is economically viable" because all have failed completely or forced to implement capitalist economic policies: the USSR, the PRC, Cuba, Venezuela, etc.
Capitalism fuels socialist policies. What fuels a socialist country like the USSR and pre-capitalist China? Taxes? LOL
I think this subject is too complex to try and simply taxonomize nation states, sort them, and draw categorical deductions about the merits economic systems,
or dissect the gradient of the abstract concepts (say socialism vis a vis capitalism) and assign countries to them. Probably one could learn more about beneficially structuring a, or validly advocating
for this or that economic model by studying the human mind, motivations and behaviors, individually and groups.