The advertising and poster art of the same period, though, is much more text-oriented. Look at Wikimedia's collections of ads from the 1870s (https://commons.wikimedia.org/wiki/Category:1870_advertiseme...) and 1880s (https://commons.wikimedia.org/wiki/Category:1880s_advertisem...) and you'll see what I mean -- though if you go through them chronologically you can also see them getting simpler and more streamlined as time goes on, so it was definitely a field in transition.

I wonder how much of the lag is just because of the way advertising as a business works. No ad, after all, gets run unless it first gets approved by a client; and the clients are usually more conservative and risk-averse than their ad-makers are. So advertising's slowness in following the culture could just come down to the fact that a campaign has to appeal to the sensibilities of stodgy old business dudes if the public is ever going to see it at all.