When a company's existing debt is at 3 percent and they have to roll it over at 6 percent (they are rarely going to pay it off) their costs go up without anythi

When a company's existing debt is at 3 percent and they have to roll it over at 6 percent (they are rarely going to pay it off) their costs go up without anything else changing. They will have to cut expenses somewhere else. For forty years, the US (and much of the world) had the opposite phenomenon: 12 percent debt rolled into 11, rolled into 10, and more and more money was seemingly made through no extra effort.