For a very long time publishing something in a newspaper has been considered a way of putting something on the public record - up to and including legal obligations like announcements of deaths. The fact that newspapers cost money has never been considered a barrier to that.
Publishing in a newspaper gets you distribution and a permanent record. After one day access was also virtually free.
Going behind a paywall is a reduced distribution over what an individual can easily access, and the content is no longer permanent but subject to whatever the publisher chooses to keep providing.
One of the reasons why it was noti considered a barrier was the ability to purchase a single issue for a very reasonable price (or even read somebody else’s copy or the copy made available by the bar) vs being asked to subscribe