> All companies are employee owned

False. Only a few are: https://en.wikipedia.org/wiki/List_of_employee-owned_compani...

The person you're responding to is not speaking literally; they're using what's called a metaphor to make a point that employees of any company exert walking power. The point may or may not be useful, but you have to finish reading the post before trying to reply with a gotcha correction.

> they're using what's called a metaphor

It isn't a metaphor, it is, in the words of Zizek, pure ideology.

has this power ever brought down a company? Has it made bosses responsible for worker injuries at work? Has it given maternity leave?

if not, its not really power

It certainly has. Employees have real power.

Power is not the same as ownership

It has.