One very basic reason for people not starting their own business is that in very many cases it simply takes too much money to get started. Of course, this depends largely on what type of bussiness you wish to start. For what I had hoped for at one time, it would have taken many thousands of dollars to do it right & I doubt I could have gotten a secured loan.
I started my first 3 businesses with almost nothing but that was a long time ago. 1. The cost of musical equipment, $600 2. The cost of a real estate license, $600 3. The cost of an appraisal license, $700. I already had a college degree, but that wasn’t needed for anything in my careers.