With enough advertising and lobbying, you can however influence the likelihoods of raindrops acting in certain ways. (I absolutely agree with you, but I believe that we shouldn't ignore the ways powerful people influence the masses.)

My point was more that people wouldn't join unions if individual action always was all it took.

Indeed, sometimes the role of the union is to get everybody doing the same thing, and provide a safety net for individuals who suffer repercussions for doing the thing.