No system has ever provably worked; otherwise we wouldn’t have had revolutions.
That's a different bar. Probably doesn't work is much easier to meet, and narrower. The person didn't ask for provably works. They are probably comfortable with "might work might not, but at least it's not provably wrong".
and?
Nah, I’m downvoting for the ludicrous claim that government paying a private company to provide a service is necessarily fascism.