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. [...]