Zero Sum Game: A situation in which a gain by one person or side must be matched by a loss by another person or side.
No situation than any of you have brought up has fit this definition.
BTW if any of you are yearning for a system where no one ever loses a job, it's already been tried. See: Soviet Union.
Otherwise, your attacks on capitalism are really pointless, as any system that allows people to provide for themselves and better their lot will have job turnover.