**** Unions are important. No individual can negotiate with a corporate monolith fairly, unions give some (but still nowhere near) balance to the equation. ****
When I moved to the US I earned $1000/month (1983).
20 years later I managed $12,000 per month with a fortune 500.
No one but I got me there.
Fell on my ass later, but blame I no one.
Employees should be valued on their own merit and not on the ability to be collectively destructive.
One only has to wonder why so few unions have not started their own corporations, being it an airline, a shipping company, an automobile manufacture, etc.