Short but Rich in Meaning

For everything you have lost, you have gained something else.
and for everything you have gained, you have lost something else.

Possible Rationale Behind Welfare State

When A has higher utility from private consumption than B, then A wishes to raise B's utility. By contrast, when A has lower utility from private consumption than B, then A wishes to lower B's utility. Is this why there's populist move towards welfare state?