The world of today can't exist without businessmen.

The world of today can't exist without employees.

If everyone were entrepreneurs, who would do the actual work?

The answer is not straightforward - everybody should be encouraged to live up to their potential according to their personality and skill. Some people are more fit to be entrepreneurs, others employees. And that's good because being an entrepreneur is not always glamorous. It can be a horrible existence and is NOT always better than having a stable job.