There is power in a union

In response to my post pointing out that lump sum payments to union members are simply the fruits of collective bargaining power, Capital Pundit stupidly asks

why can't teachers seek to secure economic benefits for themselves?

Because there is strength in numbers. Teachers are more powerful together than there are individually, and this allows them to extract greater benefits.

God, I know that we now view the world through the lens of atomised individualism (and as an individualist I think this is generally a good thing), but I didn't think it had gone so far as to blind people to this simple fact.