The Wall Street Journal has noticed that Vonage (NYSE: VG) is fighting a PR campaign against Verizon (NYSE: VZ). The voice-over-IP company is trying to claim that Verizon's lawsuit over Vonage's use of its patented techology is really an attempt to shut the smaller company down.

From The Wall Street Journal: "In a series of full-page ads in several major newspapers in recent days, Vonage said it benefits consumers by providing competition to higher-priced phone service from Verizon. 'Now, Verizon has chosen to attack Vonage in the courts,' one section of the ad read. 'Why? Could it be all about the money?'"

Well, of course it is about money. VoIP products from Vonage and the major cable companies are taking millions of landline customers from Verizon and AT&T (NYSE: T) each quarter. Just one company, Comcast (NASDAQ: CMCSA) added 571,000 new voice customers last quarter. Those customers come from the phone companies. And, the Comcast service is now available to 35 million homes.

The large phone companies find themselves behind the curve. It will be another two years before their fiber-to-the-home networks are large enough to effectively compete with cable companies for bundled voice, TV, and broadband products. And there is no guarantee that they will be able to switch cable customers over.

It is all about the "Benjamins." Wall Street should not be surprised if Verizon eventually files patent suits against the cable companies as well. If the telecom firm owns the intellectual property, why should it let competitors use the technology against it.?

Douglas A. McIntyre is a partner at 24/7 Wall St.