The "rational actor" is just a model, only applicable to limited situations, and acknowledged to be so. It's a specifiable model against which to test hypothose

The "rational actor" is just a model, only applicable to limited situations, and acknowledged to be so. It's a specifiable model against which to test hypothoses. This rather shopworn critique - "humans aren't like idealized rational actors!" - is based on the implication that classical-type economists think that the model is fully congruent with reality. They don't! And furthermore, they wouldn't agree that "corporations" (hey, why not unincorporated entities too?) can form themselves in this way. They recognize the limitations of information, incomplete knowledge of preferences, and limited foresight and prediction - and these apply no less to groups of people as they do to individuals. If you tried to suggest in a classical-school economics environment that corporations can actually, in real life, form themselves into idealized rational actors, you'd probably give them gut-busting laughing fits.