Some links to various market reports and commentators on the expected size of the industrial IoT market - US$150bn by 2020....
http://www.iottechnews.com/news/2016/jan/27/industrial-internet-things-market-reach-150bn-2020/
http://www.marketsandmarkets.com/Market-Reports/industrial-internet-of-things-market-129733727.html
http://www.prnewswire.com/news-releases/the-industrial-internet-of-things-iiot-market---valued-at-9399-billion-in-2014-to-reach-15101-billion-by-2020-566021601.html
The IoT is clearly expected to be very big business, so the value of this technology (e.g. i