Why are you believing Fascist propaganda? Yes, Mussolini said that a Fascist corporation was a collective owned by the state with employees having most of the control. In reality that's not what he intended.
In practice the state did not have economic control over the corporations. In the example of Nazi Germany, the cooperation of large industrialists was necessary for accession to power, and the state was too incompetent to achieve even basic control over the economy, so it was privatised and the leaders of corporations instead were integrated into the social Darwinist structure of society that the Nazis loved so much. Which turned out to work pretty well with unbounded free markets.
In practice the state did not have economic control over the corporations. In the example of Nazi Germany, the cooperation of large industrialists was necessary for accession to power, and the state was too incompetent to achieve even basic control over the economy, so it was privatised and the leaders of corporations instead were integrated into the social Darwinist structure of society that the Nazis loved so much. Which turned out to work pretty well with unbounded free markets.