There are products, sales, marketing, people, share price, competition and many other factors that keep business people up at night. In the documentary "The Corporation", producers examined the modern-day company. They evaluated its behaviour towards society and the world at large as a psychiatrist might evaluate an ordinary person.
They concluded if the corporation was human, her ultimate goal would be to make money above all else. If that is the sole purpose of your company, be nervous. Fiscal health is imperative but without strong internal customer service, it will be a struggle.
If you don’t treat people well, they won't stick around, or worse they may stay and have a hand in your demise. Treat them right with strong and fair leadership and those profits will actually increase. We all share an inherent human need to belong.
That doesn't stop when entering the work area.