Most people don't give a furry rat's derriere about detailed lore.

Most people only need a 10,000 foot view of a campaign world and will never read more than a sentence or three. Meanwhile there are already thousands of pages of information available at the click of a button for those who do want that kind of detail.
I don't see any significant demand for detailed lore. Many want to fill in the blanks themselves, most just don't care. I'm not making any judgement call on what "enough" is, because I'm in the "I want to fill in the blanks myself" crowd. I'm just pointing out the reality that in my experience most people don't care and for those that do there's a ton of existing lore a few clicks away.