(There have been some really interesting displays of this, like Robot 9k avoiding chat spam, or Kingdom of Loathing's 3-question "test" for joining global chat.)
Print fiction stories are higher average quality than web-published or fan-fiction, because they costs money to produce. Nobody prints and binds 500 words of unfinished, unedited rambling, but they certainly put it on AO3. But it turns out there's a lot of stuff that's interesting and valuable, yet too niche or awkwardly sized to justify printing.
So I guess there are two questions. First, does the barrier to entry improve the overall quality of the thing, or just weed out the weakest examples? Charging anyone who calls a meeting $10 would avoid some stupid meetings, but requiring an agenda can also improve worthwhile meetings. Second, are the marginal examples worth having? For a short story in a database, sure. For a five person meeting? Definitely not.