This is a shallow dismissal of GP’s point. The point is more, “we aren’t sure it won’t work because it has never been tried,” which is much less of a straw man to argue with.
There was an unequivocal claim that it will work better than our current system.
“Acting like centrally planned dictatorships is a good form of collaboration is just so off base. There's no reason to think that introducing democracy into the work place wouldn't immediately benefit both workers + customers.”
That sounds more like there’s no evidence that it won’t work than an unequivocal claim that it will.
Now, corporations usually have the problem of competition, so if they aren't responsive (or at least responsive enough), they get out-competed by those that are. Is that enough to make them different from governments? Perhaps, but I don't know.
That's just neoliberalism baby!