$19T in IoT: How Cisco Plans to Get ThereYesterday, CMSWire reported that Cisco CEO John Chambers thought the Internet of Things (IoT) was worth $19 trillion. Big number, eh? Today, Cisco shares didn't even budge, pointing out the market has trouble seeing this number. Clearly everybody's asking: How do we get the trillions of cash?

Let's take a more detailed look.

Chambers' big keynote  speech last night at 2014 International CES was of course more of a marketing event than something that will deliver short-term numbers. But it's important because lots of people are waiting to hear where Cisco, which built multibillion-dollar markets by becoming the premier networking provider in the creation of the Internet, will get its next growth story.

Between infomercials, Chambers painted a compelling picture of how networked devices -- especially in municipalities -- have the potential to generate a huge return on investment (ROI). The problem is that those dollars will be hard-earned, and it's not yet clear if Cisco is best positioned to sell into the Internet of Things (IoT) -- or the Internet of Everything, as Cisco calls it.

Sticker Shock

So back to the numbers. Where exactly did Chambers get the $19 trillion?

Cisco officials say the numbers come from two studies. One on the public sector, in which networked efficiencies generated from public services such as utilities, parking and other government infrastructure can generate $5 trillion. Another study says the private sector is worth $14.4 trillion. Add that together and you actually get $19.4 trillion. Maybe they just should have rounded up to $20T? 

If you look at other numbers, they are also large, but more modest than $10 trillion. Gartner has a big number, too, but it's not $19 trillion, it's $1.9 trillion. That's how much the research firm says IoT will create for the economy by 2020. Gartner believes that you can calculate that by estimating there will be 30 billion new connected things and they will each result in the system being $100 smarter per device.

It's going to be hard to get a lot of people to believe the $19 trillion number.

"The $19 trillion, that's a bit over the top, even for Cisco," said Needham & Co. analyst Alex Henderson in a phone interview this morning. "Does IoT and connectivity make sense? Sure. Does it have implications for the numbers for the next two to three years? No. This is something to think about in the next five to ten years."

The opportunity is no doubt quite large, probably trillions, if not $19 trillion. But the mechanics of getting the money are more complicated. Large technology -- such as Cisco, as well as other companies going after this market, like GE -- like to wrap their marketing campaigns around big concepts (such as IoT), but IoT is actually a collection of many fragmented, complicated markets in government, the automobile industry, healthcare and home entertainment.