The Wall Street Journal pointed out an interesting trend this week, in which many of the best known names in corporate America are reversing a long-standing trend and now going vertical with their business models. Using the recent acquisition of Sun Computers by Oracle Software, CEO Larry Ellison plans to transform Oracle into a maker of software, computers, and computer components, and a services arm which will look more like the large computer conglomerates of the 1960s.

According to the Journal, vertical integration is “a 100-year-old strategy in which a company controls materials, manufacturing and distribution. Others moving recently in this direction include ArcelorMittal, PepsiCo Inc., General Motors Co. and Boeing Co.”

What’s causing this trend? Volatile commodity prices, financial pressures at suppliers and quests for new revenue, all of which have become more acute due to the recession. Ultimately, these companies want more control over their destinys and their customers. From our vantage point in the area of service design, one point not mentioned in the article was the role of the Internet on these changes. Since the Internet has made almost everything much more transparent and immediate, large companies can better control the vertical “stack.”

But in the end, time will tell if this trend stays or goes. As Mr. Ellison summed up: “We’re really brilliant, or we’re idiots.”

But then again, Ellison didn’t get to be one of the most successful CEOs (and the 4th wealthiest man in the world after Gates, Buffet and Helu) by being an idiot. Watch this trend.