A sense of ownership makes a material difference to me, and it must be material ownership for it to count. Relative compensation is also important - if I'm not

A sense of ownership makes a material difference to me, and it must be material ownership for it to count. Relative compensation is also important - if I'm not being paid well relative to others, that can destroy my motivation. Great inventors won't stay at a job doing 9-5 work, of course. Treat people as levers, and good people will leave.