Corporations use a combination of debt and equity to finance their investments and operations. Nations, in contrast, rely exclusively on debt. When a nation's economy stalls and its debt continues to grow -- you may have noticed this happening a lot recently -- disaster looms for the country’s taxpayers. This is why Europe is in turmoil right now. But things don’t have to work this way.
Here’s an audacious alternative: Countries should replace much of their existing national debt with shares of the “earnings” of their economies.