Why would you need more than 100 new creators per year in a specific niche? How many tries to fill the niche doesn't matter, what matters is if the niche gets filled. And today more niches gets filled than ever before, at least from what I see. So the problem isn't that the modern system doesn't successfully make people able to support themselves with these things, but that it lowered the barrier to entry to much that many more people fight over the same pie so you have many more losers than before.