As zslatsman already said, this is not true to nearly as great an extent of most people as it is of corporations. Corporations have an obligation to maximize profits, whereas humans are rarely profit maximizers.

Some people are more willing to externalize costs than others. For instance, some people, given the opportunity to file expense reports under which they can cover luxuries, will take the opportunity to live it up as much as possible on someone else's dollar. Other people, myself included, would feel guilty, and try to be as frugal as possible.

Try not to overgeneralize your own mentality.