Buffett famously did this over at Berkshire, where he realized that there would be no future for domestic textile mills. He took the cash flow the company was throwing off and invested it in other companies.
So I think that Godin makes a huge overgeneralization, especially when he mentions newspapers. The economics of that business have drastically changed and allocating capital to keep things the way they are is probably a recipe for failure. They'd be better off using the newspaper's cash flow by cutting current costs and allocating that cash elsewhere (new lines of business)