Companies that act as OEMs for enterprises most likely have a larger footprint of Intel installs than Google. Any single companies usage of a product is dwarfed by how much effective installs a large OEM might have.
Maybe if Lenovo, Toshiba, Acer, Dell, etc all asked Intel to provide said blobs (and the threat was tangible) then they would probably reconsider.
Basically he says that even Google is puny (in terms of production units) in front of Intel or Samsung, and cannot ask for custom firmwares.
Hardware security is currently a shit show because of global monopolies/"oligopolies".