I guess I'm one of those "duh" people. I think it already is an application platform/delivery system (has been for a long time), and I think that the ever-evolving web is a good thing.
In college, I had professors literally laugh at me when I said I believed most software was moving toward the internet. Fast-forward to today and I'd say that their actual insults against my chosen direction of software engineering (targeting standards-based web solutions) were not only unprofessional - they were entirely not correct.
Reading this document literally felt like I was hearing their arguments as to "what the internet should be" all over again... And, as someone who embraces the internet, I feel so much of this is regressive. Especially in regards to taking shots at stuff like WebRTC...
Your friend and I differ so much in-that they argue against things like communication, graphics, gaming, etc in the browser where-as I have built a career off of embracing it.
> I'm very sure it's profitable to turn the web into an application platform
The web has been an application platform since ECMA landed in Netscape, and arguably long before that too. The anti-application "content presentation only" take has been something for a long time, and it is not going to happen or we'd still be on the original "Hyper Text Markup Language" spec. The web has always wanted to be more than it's previous spec... it's an ever-evolving standard that is designed to meet the changing needs of it's users in an ever-changing world.
Information, capability, and expression all want to be free.