Regardless, the business was there. Wikipedia killed all that. So if you want to create an expertly created encyclopedia anno 2025 you have a real problem: you will need to pay experts for their time somehow otherwise why would they compete with the million monkeys, but your source of revenue has been strangled by those very same monkeys, who it turns out produce content that is orders of magnitude better than anything I've ever read in a for-pay encyclopedia from before Wikipedia.
The bar to entry is insanely high.