Size of WSN market

Though, WSN still seems to be in the university laboratories only, recent market research shows the tremendous growth opportunity. Recently various analysis company did a market research and arrive at many common opinion about the size of the market of WSN.
There are more than 100 OEM development companies who develop OEM of wireless sensor network. [...]

So the service industry in WSN domain also

I have seen the analogous between the word of microprocessor/microcontroller and wireless sensor network, the way todays IT service provider company provides service for the buisiness need to the rest of the world.
Consider a case, how a service  provider company do business in embedded system and typically in microprocessor and microcontroller domain. They purchase these chips from large manufactuer, (e.g. [...]