All systems have failed. The theory of capitalism has been obstructed and corrupted by centralization/authoritarianism.
The theory of capitalism wasn't/is not the problem, the problem is arbitrary rule of law.
World war or governments waging war is not capitalism, humans have always had conflicts, but free markets reduce incentives for war by fostering trade and mutual gain.
Capitalism channels tech into progress, but when elites control the system, it can be twisted toward destruction, like bombs.
Centralized systems, like the Federal Reserve or state-backed banks or the state, breeds corruption, not freedom.
Deciding for others is corrupt—they’d call that the root of the problem, and why capitalism, when it’s actually free, is the only system that respects individual choice, voluntary cooperation, private property, and incentivizes peace prosperity and coexistence.