Warren Buffett is probably the most intelligent investor on Earth, but even he's not right every time. One of Buffett's most famous picks, International Business Machines (NYSE:IBM), stopped growing its revenue a long time ago. Third-quarter results were very disappointing, as Big Blue's total revenue declined 4% year to year, sales to growth markets fell 9%, with BRIC market sales falling 15%, and the hardware business unit shrinking 17%.

Aware of poor results, tech investors are shifting resources from IBM to other traditional giants, like software king Oracle (NYSE:ORCL) -- up 3% in the last month -- or to promising cloud companies, such as Workday (NYSE:WDAY), up 17% in the last month. As a result, IBM's stock is underperforming, with shares priced around $173. This is just $3 above the price Buffett paid for most of his 64 million shares at the end of 2011. In the long term, is Buffett right about IBM? Can Big Blue fix its business and restart top-line organic growth?

Source: YCharts

Forget about poor growth, Buffett is right about IBM
IBM's revenue and share performance may be disappointing, but the company could still be a good income investment.

First, IBM's management has authorized a five-year, $50 billion share-repurchase program, which is set to significantly reduce the amount of shares outstanding, currently 1.1 billion. This means that the percentage of ownership that each IBM investor holds is set to rise. In the case of Buffett, if IBM's share price remains constant, his ownership could increase from 6.2% to 7.8%, representing millions of dollars.

Second, IBM has been raising its dividend consistently for the past decade. Assuming IBM pays $3.70 per share this year, the company will have raised its dividend 20% annually for the past 10 years, up from $0.70 in 2004. This high dividend is very attractive to long-term investors.

IBM and the race for top-line growth
Share repurchases and high dividends make IBM a great stock for a patient value investor. However, revenue growth is also an important investment factor, since nobody wants to invest in a company with a poor business.

As Arne Alsin mentions, two-thirds of IBM's revenue is recurring, that is, derived from locked-in contracts. This is IBM's core business, and unfortunately, is shrinking quickly as companies and institutions move from private clouds and personalized software to cheap, public cloud solutions.  

Workday is a company that has taken advantage of the recent technological shift. Unlike IBM, Workday does not offer private cloud infrastructure or personalized IT systems. Workday is a cloud company offering software as a service for human capital management, data analytics and accounting. Most of its customers are medium-sized businesses, but it has also closed important deals with Fortune 500 companies. Workday represents the new type of competitor that traditional tech giants have to face. In the past two years, while IBM's revenue contracted 5% and Oracle barely grew its top line, Workday experienced an amazing 84% revenue increase.

Source: YCharts

The good news is that, despite its recent revenue contraction, IBM's long-term prospects remain attractive. 

It's true that appetite for expensive IT systems has decreased after the economic downturn, hurting IBM and Oracle. However, it's important to note that there are certain customers that will never move to the public cloud. Some important institutions, from governments to financial institutions, need personalized IBM hardware solutions, and personalized Oracle software, regardless of pricing. The business model of these institutions prioritizes safety over anything else. Therefore, they are willing to pay a 100% price premium for an additional 1% increase in safety and personalization levels.

Final Foolish thoughts
IBM may be losing its most price-sensitive customers to cloud companies, but its loyal customer base remains intact. In the medium run, the company should add more exposure to public cloud solutions, prioritize software, and divest low-margin hardware operations. This will allow IBM to focus on promising segments, keep its loyal customer base, and at the same time increase cross-selling.

These changes are already happening. According to the official road map, about 50% of IBM's segment profit is expected to come from software by 2015. Focusing on software and databases allowed Oracle to deliver growth in difficult times. Software licenses and product support account for roughly 70% of Oracle's revenue. They also make up the most profitable business unit. A similar focus could help Big Blue to generate higher value. 

Notice that Oracle's business model relies on cross-selling. The company excels at selling many solutions to the same customer, from databases and infrastructure to middleware software -- programs that glue together two or more already existing programs -- and training. 

Finally, IBM has started to provide affordable public cloud solutions for enterprises. Under the name IBM SmartCloud Enterprise, the company provides agile, safe infrastructure based on the cloud. Pricing is very competitive, with a system of 10 Zend servers starting at $2,800 dollars per month. It's too early to know how these changes will affect revenue, but one thing is certain: IBM has already started to see cloud computing not as a threat, but as an opportunity. Big Blue is back.

Adrian Campos has no position in any stocks mentioned. The Motley Fool owns shares of International Business Machines and Oracle.. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.