How does it seem Marxist? I think Marxist type of materialist critique is absent from his works and he tends toward airy notions of "power" and a "great man" view of history.
Marxist, as in his contrasting of power relations (usiLly shadowy owners/bureaucrats vs consumers, if not proles), and explicit in that all operate in global market. Ie dynamics are always worldwide, connected, interchangeable.
Also Marxist by extension, because Curtis is taking after Debord and baudeillard: wafting underneath it all is a vapor,the commoditization of everything, the flattening of reality, mass media as a factory for dispositions.
Fwiw - I don't necessarily see the great man view, it's more a Ted talky way of anchoring his stories. E.g. sure Clinton xyz, but could just as well be interchangeable usa president xyz.
Thanks for your perspective, I have more orthodox understanding of Marxism that leads to different conclusions but I can see the connections you make as well.