I'd say the ideals of a worker cooperative is that the workers _are_ the organization. The organization is a means to an end for all workers benefit. Not the other way around as is usually the case in a totalitarian capitalistic one.

And yes you're right, Capitalism gives you as much control giving as any totalitarian system, quitting/exile.

As the goal of worker cooperatives is usually not to become multi-nationals I'm not sure how low your bar is for when ones vote become absolutely futile.

You observe this effect in national politics all the time - for instance, the emotional benefit of voting for a cool guy like Trump drastically exceeds P(vote effects outcome) x (Delta in outcomes). Last time I checked, I had to approximate P(vote effects outcome) by hand because it was too small to represent with double precision floating point numbers.

As other commenter said, you can always exit. But democracy gives you explicit right to change things (albeit no bigger than to other people in the organization), which is actually a more efficient method of introducing change than fatalistically wait until the dysfunctional organization dies.

I fail to see how this is any different than in any other job, at least for non top level management.