If environmental setups struggle to produce the expected effects, it isn't for lack of relevance, or absence of intent from the organisations deploying them.
Their limit lies in their capacity to be perceived, understood and embraced. Once installed, these setups compete with an environment already saturated with signals, information and habits. Without something distinctive, they quickly become invisible.
This invisibility is reinforced by the homogeneity of the messaging. Environmental setups often fall into similar visual and discursive codes, mostly positive and exhortative. With repetition, these messages end up cancelling each other out.
Communication that is too neutral fails to capture attention. Communication that is too prescriptive or guilt-tripping, conversely, can generate rejection or avoidance. In both cases the result is similar: the setup is present, but it doesn't create engagement.
On top of this emergence problem there's a comprehension issue. Environmental benefits are often diffuse, indirect, even abstract. Without concrete framing, they struggle to elicit an immediate reaction.