[mark_l_watson]

These a fair criticisms of the semantic web. One thing the author misses (does not touch on at all) is domain specific RDF resources for biology, medicine, etc.

schema.org and WikiData are great resources and for large companies, using these as a foundation for their own internal Knowledge Graphs can make sense. This expense is (maybe?) too large for small and medium size companies, they would not get enough benefit for the cost.

I worked with Google’s Knowledge Graph as a contractor, and I am still a believer in the technology but I also respect other people’s well founded scepticism.