Originally posted by KazetNagorra
Social liberalism is currently implemented in large parts of Europe.
It can't be said that any system works, just because it is implemented, supported by the State by force, and hasn't collapsed in chaos yet.
On that basis, Leninism "worked", and Stalinism "worked". If eliminating an upper class is the goal, collectivism "works". If the goal is prosperity for the worker, it doesn't.
Mutualism is an interesting concept. As long as it is voluntary, doesn't involve Statist force, or criminal fraud, mutualism is totally at harmony with capitalism. The corporate structure is ultimately "mutualism" except that as the corporation grows, the entity most often ignores the shareholders.
Cooperative effort is always a good thing, so long as it is voluntary on the part of those participating. When it is not, it is at least partially slavery.
The Marxist, Leninist, Stalinist, the Fascist Corporatism of Americas, and the social democracies all rely on the force and power of the State to exact the "cooperative effort" of the people. Some of the people volunteer, and for a while it becomes populist due to the promised benefits, which inevitably dry up or fall short of promises, while taxation, regulation, and limitations on liberty and choice grow.