Programmers interests aren't aligned with the business because they don't directly share in the profits in a significant way. Managers do and so their interests

Programmers interests aren't aligned with the business because they don't directly share in the profits in a significant way. Managers do and so their interests are somewhat aligned with the stockholders. Instead, the programmers do what is in their self-interest, make their own lives better since they see little direct benefit from doing otherwise. The stronger the incentives to be helpful, the more helpfulness you'll get.