Your understanding of how credit is used by business is limited.. you need to broaden your view. Comparing a company’s need for credit (especially a small company) to you blowing your wad on beer and not being able to make rent is not an accurate analogy.
I own a fashion co. that uses and relies on credit all the time. In business when opportunity knocks you have to take advantage of it. This means sometimes borrowing to fill large orders and yes even occasionally borrowing to make payroll.
Effective small business owners are ballsy and do what they have to do bring in profits and keep their staff employed. If the credit dries up the result will be larger companies with deeper pockets capturing more market share while small businesses lay people off and go under.