> In a company, employees needs an incentive to work together and be constructive.

I think this is exactly backwards. The overwhelming majority of people I have met in life are by default collaborative and supportive.

What screws this up is the introduction of bad incentives, often unintended ones.

I'm not saying there are no natural incentives to competitiveness etc., but if you artificially introduce more of them it tends to be net negative. Lots of companies do this, even without intending to.