I honestly don't believe that there is such a thing called "business sense". Money making opportunities are pretty obvious to anyone who can be bothered to take a peek. Try it yourself. I'm sure you'll be able to spot a few winners if you sit down and think.
I'm not talking about grand schemes that can make millions. I'm referring to the simple service related activities which are well within the capabilities of most people and which can generate a comfortable income to enable one to pay the bills with a bit to spare which can be channeled back into the business.
The problem is not the inability to think of ways of making money. The problem lies in the inertia that needs to be overcome before people can actually change their mindsets.
People keep gravitating towards looking for a JOB because they have a preconceived idea that it's what they were cut out to do. They start off with a JOB and they then keep looking for one JOB after another no matter how badly "JOBS" treat them along the way.