Unions are good to protect employees that don't have negotiating power (e.g. factory workers), otherwise companies would take too much advantage of them. I am

Unions are good to protect employees that don't have negotiating power (e.g. factory workers), otherwise companies would take too much advantage of them. I am not sure this necessarily applies to knowledge workers, especially if their work can be done remotely to some extent. These two paragraphs contradict each other.