The power of M2M is the ability to enable drastic changes in an industry. To do things differently. To change the game. Like in the early days of Internet we still focus on connecting things. That is good and makes us faster, cheaper, greener, etc. But it doesn’t change the game. It is when the technology is used to completely re-think and re-design something the power is released.
A wonderful example is thermostats. The “father of the iPod”, Tony Fadell, created the “learning thermostat” after having stumbled over expensive, dumb and ugly thermostats for the green house he was building. He created the gorgeously designed Nest which has been shipping for more than a year now. It is said to be compatible with 95% of the American and Canadian low voltage residential heating and cooling market by now. This little sexy device can remove some 20% of the heating and cooling energy bill and cost $250 US. Nest is now shipping 40-50K units per months and investors continue betting on Nest which now is said to be valued to $800 million US.
People normally don’t bother about thermostats but this easy to install and use, wonderfully designed and intelligent darling that saves people money has become a best-seller at Amazon, at Lowe’s and on Apple’s online store. It uses a number of sensors to understand the life-style of the household and adjusts heating and cooling in an optimal way. Beyond the information on the device itself it communicates with people’s smartphones and pads.
Innovative new approaches in established industries are always challenged by established players and Nest is already involved in legal battles. But I think we only have seen the beginning of Nest. Now they address consumers right away, seducing them with design and a good cause. But the device is Wi-Fi and ZigBee enabled thus ready for the Utilities and the Smart Grids. Is there a reason for a Utility to install another device in a home where a Nest already is in place?
connectcompute 
A comment somewhat off topic, but as I was checking PTS statistics for the first half of 2012, the following stats were clear for M2M use in Sweden:
YoY the number of M2M SIM cards had grown 27%, but overall data consumed by these cards had grown 95%, and average monthly income per card remained constant. So the question of how operators can make money from the M2M business when data comsumption multiples remains to be answered.