There's a lot of overhead to running a business, some of which is captured on a balance sheet and some not. There's risk, there's stress, there's wear and tear

There's a lot of overhead to running a business, some of which is captured on a balance sheet and some not. There's risk, there's stress, there's wear and tear on both man and machine, and there is opportunity cost. Just because you expect to make a profit on paper doesn't mean that it's worth the effort.