Disruption is a cruel mistress. It giveth and it taketh.

Nokia (NOK 0.55%) is a prime example of how rapidly a once-mighty titan can fall in the face of intense competitive pressures and disruptive threats. Nokia reigned as the top mobile phone maker in the world for a solid 14 years, only to be dethroned by Samsung earlier this year. The Finnish giant remains in the midst of a multi-year turnaround hinged on the success of Microsoft (MSFT 2.22%) Windows Phone 8, led by an ex-Microsoft employee.

However, Nokia remains just one of the victims of this trend that I like to call "the mobile revolution" (OK, other people call it that too). The traditional PC market is the most obvious industry to be ravaged by this massively disruptive trend. Is Hewlett-Packard (HPQ 0.86%) the next Nokia?

A tale of two stocks
Simply comparing a price chart of both companies shows a remarkable similarity in their respective trajectories. One difference is that Nokia is further along in its downfall than HP, but at this rate, HP is well on its way to the same destination.

NOK Chart

Nokia data by YCharts.

Both companies also count gadgets among their core businesses, while each also has other segments to help pay the bills. Nokia has its networking operations and insignificant mapping business, while HP has its printing, services, and enterprise server businesses. Both are also relying heavily on Microsoft's next generation of operating system platforms for their fate: Nokia with Windows Phone 8 and HP with Windows 8.

Let's look at two of HP's biggest businesses in particular and see how the trend toward mobile computing might affect the iconic company.

Personal systems group
The rise of smartphones and tablets is wreaking havoc on PC sales, and HP's PSG segment is the first to feel the brunt. Through the first three fiscal quarters ending in July, total sales in this segment were down 8.5%. This was primarily driven by laptop and desktop revenues falling 10.5% and 7%, respectively. In the third quarter alone, laptop units were down 12% and desktop units fell 6%.

Thanks to absurd CEO turnover, a cohesive mobile strategy has yet to emerge from HP. Mark Hurd never got to see his vision pan out, as he was ousted amid a sexual harassment scandal and his successor Leo Apotheker promptly axed webOS hardware operations. Now current CEO Meg Whitman is hoping Windows 8 will be the tablet turnaround HP needs, while also confirming a smartphone is in the works. She later clarified that no HP smartphone will be launched in 2013.

At 30% of total sales, weakness in this segment is a major drag on consolidated results.

Imaging and printing group
If it weren't for absurdly overpriced printer ink, this segment would be nothing. Supplies comprise two-thirds of the IPG's revenue, and hardware revenue is down 5.7%. In a misguided attempt to piggyback its printing business on the rise of smartphones, HP exec Todd Bradley recently noted that web-enabled print services (such as printing from smartphones) would boost the business.

I have never heard of people interested in printing from their smartphones, much less seen anyone perform such a feat. This mythical task must be out there somewhere in a niche corner of the universe, but it won't be enough to stem the IPG's decline.

Through the first three quarters, revenue is down 7%, yet still comprised 20% of the top line.

Know when to fold 'em
Between just those two operating segments, we're talking about half of HP's business under heavy fire directly from the shift to mobile devices, where it has no presence currently, and its future forays remain uncertain and will likely prove unsuccessful. Its other IT businesses are facing intense competition from the likes of IBM (IBM 0.62%), which it aspires to be like, and its server hardware division is being threatened by major trends like virtualization.

At this rate, HP very well might be the next Nokia: a fallen industry leader that failed to keep abreast of major trends. It's not in quite as dire straights, and if the turnaround attempts prove unsuccessful, it won't be Whitman's fault. She was dealt a bad hand, and sometimes investors just need to know when to fold 'em.