Maybe you should do some research on that quote.

Because there is literally no evidence he ever said it. It's a widespread but false attribution, as I outlined in another comment.

https://news.ycombinator.com/item?id=46239664

This attribution leads to a truly fundamentally broken reduction of what Mussolini actually thought fascism was (though his own definition of it was largely pseudointellectual drivel).

But even then, "corporatism" doesn't mean "capitalism" at all.