Marketing has had four media revolutions in 500 years: print (Gutenberg, ~1450), broadcast (radio/TV, ~1920), pixel (web/mobile, ~1995), and prompt (LLMs and AI assistants, ~2023).
Each one collapsed the cost of producing or delivering a marketing message by roughly an order of magnitude, killed the previous craft elite, and rewrote what 'good marketing' meant.
The prompt era is structurally different: the medium itself reasons. That is the largest shift since Gutenberg, not since the iPhone.
Three things survive every revolution: distribution leverage, brand memory, and editorial taste. UK marketers compounding those three skills do not get displaced.