At that point in the game, if you haven't already been investing in tourism it's not really going to do anything. If you've been warring and diplo-ing all game with no tourism, landmarks are not gonna help you catch up. They definitely could help supplement or maintain your existing cultural influence but that's about it. Even the tech is not very attractive for non CV civs. A small drip of tourism (that requires lots of hammers) is not worth being late to military science, dynamite, industrialization, or corporations. In fact, for most wide play (that isn't already focused on tourism), rushing corporations is probably going to speed up your tourism faster. I want even the most focused domination player to have to pause and consider going for archeology, but often it is very easy to ignore until you need biology (which is arguably also a mostly tall friendly tech, hospitals aren't high priority for wide) I doubt a small tourism boost is going to be better than beelining flight or corporations.