1. The author points out all of the services which now exist, but says nothing of people and talent it takes to create and support such services. I think the tail for 'software enabled services' is rather longer than factory automation robots.
2. The author seems to have a somewhat narrow view of what developers actually do these days. Yes, it is true that people are not typically employed to roll their own e-commerce or blog sites. Very few people are doing this nowadays. Most of the software getting written for business today is highly specialized. Highly specialized software = no out of the box solution.
3. The author ignores the fact that a major drop in demand for software talent would probably coincide with some revolutionary change in technology. I'm talking about ubiquitous self driving cars and planes, robots that teach themselves, ad-hoc on site manufacturing via 3d printing, software that writes itself, etc. Should any of those things come to pass, having a nice job as a developer will be the least of anybody's worries.
While I do agree that the industry is changing, I really don't see it as being that similar to the auto industry melt down. The differences and flaws in such an analogy are easily spotted.