Even though I compleatly agree with everything being said in the article ,it highly understimate how hard it actually is to build a semi-complex IoT product. Our startup realized this after 2.5 years in the making of a Smart Things competitor. For example, to debug something you need to check a larger set of things (cliente, backend, hardware, embedd software, network, etc). It will all get better but as of today it really is hard to achieve.