In my opinion the problem with Usenet is accessibility to “normal” people. For a non-technical user, or even a neophyte, the mere act of finding a Usenet news server is difficult. Yes, we have Eternal September, but if you ask most people, they have no idea what that is. When ISPs offered it, access was easy to find and there was nothing else as ubiquitous. Now, most search results for Usenet find the paid news servers and nobody wants to pay for something that, for all practical purposes, exists on other free platforms.
If we want to revive Usenet, we need to have a big-name provider offer free access with no strings attached; no walled garden, no caveats. If a service like Reddit were to come along today, built on top of Usenet, it would explode in popularity. The problem is that any company building something like that wants control over the access to data and content generated on their platform. It’s kind of a shame, actually, that a project like Lemmy doesn’t do just this…