In addition to undertaking risks, entrepreneurs often work long hours and make a lot of sacrifices. They are usually very independent people who are creative and often object to the systems of rewards and promotions used by most corporations. This is because

Entrepreneurs like to be their own independent masters , bear the good or bad consequences of their decisions themselves.

Explanation:

Entrepreneurs object to the systems of rewards and promotions used by most corporations, because they are decision  makers who want themselves to bear or enjoy the positive or negative repercussions of their choice.

They like to be masters of their own selves, and prefer to utilise their knowledge, competence, expertise for creating a name of their own/ their own organisation, rather than their efforts building other's name / organisation.  

However, this independence & self experimenting by entrepreneurs to build something of their own has huge multiple risks. So, the price they have to pay for this is extra working hours & big sacrifices.

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