Yes, there's a risk that they get fired and have to find another job. It's likely a smaller risk than if they work for themselves that they won't be able to sell their services or products.
There's even more of a risk if a company goes bankrupt, they may not pay the amount owing on the last payday, or any accumulated vacation pay amounts. And that sucks, but it's likely much smaller than the small business owners losses in that case.
I'm talking small businesses. There's not bonuses for firing people in small businesses. Bigger companies yes, and those are often evil mf'ers. But small companies are usually just owned and run by normal people.