It is the same for every company. Employee says I do 'x' and without me, the company would not be able to operate therefore I deserve part of the profit. Thing is, the employee was hired on and agreed to do 'x' and so they do not have a right to claim any more. As such, they can strike out on their own and as the article says, learn that there is great risk to be had and choose between large risk and making millions or little risk and a small salary.