From the UK-based Press Gazette daily newsletter, Feb. 7: “Meta made $135bn in revenue last year. In the UK alone it made more in advertising than every UK publisher (print and online) combined.”
A metaphor might be, in the old days, if you wanted to buy a car, you had to buy it from a “car” company, be it GM, Ford, Chrysler or American Motors. Now you can import your vehicles from several countries, or just Uber everywhere.
Similarly, the publishing business is now fully disrupted. You are no longer forced to advertise with “publishers,” and ever larger numbers of advertisers do not.