Theory Z: The prime motivation for every single employee in every single organization is improving their own local working and living conditions. Whether that materializes as X or Y behavior is a question of how well management can align the employee's self-interest with the organization's interest.
Aligning incentives is harder in some jobs/industries than others, so for the hard ones, behavior would tend toward X, and for easier ones, behavior would tend toward Y.
Aligning incentives is harder in some jobs/industries than others, so for the hard ones, behavior would tend toward X, and for easier ones, behavior would tend toward Y.