Unions predate the labour movement. The Royal Society is oft considered the first formalized union, originating in the 17th century, with a focus on the progression of science and not employment woes.

The early trade unions were not successful. I mean, they were successful in bringing about change, but they were not successful as power entities. They had to lean on government to exert the power. Unions are a rich man's sport.

Of course, government itself is ultimately a union, although differing in how membership is recognized. A government of only poor people wouldn't go far either, though. Government equally needs riches to wield power.