Neither the theoretical construct of socialism nor of capitalism has ever "worked" as a pure ideological system.
All the most advanced democracies, demonstrably, have succeeded based upon their pragmatic incorporation of the positive aspects of both.
Would the United States "work" better for Americans if socialistic programmes such as Social Security and Medicare had been defeated by rabid ideologues? How many Americans, in a frenzy of pure capitalistic zealotry, are demanding their repeal?
The House just passed a bill that augers such progress. It
- reduces the cost of some prescription drugs
- extends the child tax credit
- provides universal pre-kindergarten for 3-and 4-year olds
- allows four weeks of paid family and medical leave
- builds affordable housing
- expands Medicare coverage
- creates "clean energy" jobs
In all those respects, it emulates the most advanced nations on earth in the proven formula for success.
What extant alternative paradigms might one aspire to?