In an information-rich world, the wealth of information means a dearth of something else: a scarcity of whatever it is that information consumes. What information consumes is rather obvious: it consumes the attention of its recipients. Hence a wealth of information creates a poverty of attention and a need to allocate that attention efficiently among the overabundance of information sources that might consume it
Herbert A. Simon (1971)
For more on the economics of rational inattention, see Maćkowiak, Matějka, and Wiederholt (2023).