Having an educated populace has enough value that we have public schools; I don't see how informing adults is any different.
Note that I think there are also a ton of unrelated recent societal changes that make it not economically feasible for the news to be behind a paywall; notably that recent shifts that have dramatically reduced cost of publishing and aggregating have made it extremely easy to republish other journalists work trivially. All you need to do is have a subscription to the NYT paywall and one guy getting paid shit to reword their articles; to any other user they will choose the free content that has the same core information that the other site could never have afforded paying for investigative journalism. Patents on reporting facts are obviously untenable, so I see no real option other than the state supporting the media.