Maybe the author has a point, but this article is incoherent. There is no sources and the entirety is predicated on baseless assumptions and some analogy.
No sources or even attempt to prove any claims:
- There are too many publishers
- There is a fixed amount of 'revenue seats'
- Google/fb/etc take a portion of that fixed revenue
- etc.
I don't even know what 'too many publishers' really means, but there is undoubtedly not a fixed amount of revenue (double digit growth every year in digital ad spend), and google/fb only increase that total amount of ad revenue by acting as a ssp/dsp/exchange.