Unions don't try to organize happy work places because they know how hard it is to do even when people are treated poorly. It's not worth the effort as people are not motivated to organize. Suggesting that people are going through the long hard process of unionizing for no real reason suggests a lack of understanding of the process and the pushback from management that happens.
People don't unionize for the fun of it. It's a long hard slog that often fails.
