Epoxy is different from the rest of the trades on this list: most of the market does not know they want it yet. Nobody's garage floor fails. A homeowner sees a friend's finished slab, or a shop owner gets tired of stains they can never scrub out, and the want appears fully formed — usually from a picture, not a problem.
The work itself is short and appearance-critical. Grind, prep, coat, flake, topcoat, cure. A single day on site for residential, a weekend shutdown for a commercial floor, and the result is judged on how it looks under lights and how it holds up under a hot tyre.
That combination — invisible demand plus a visual product — means a channel mix built for search alone will always undershoot. The demand has to be created as well as captured.