Hard to say. It might be simply a supply problem- most movies, books etc. don’t really promote this vision of humanity’s place in the world, so it indeed might be a question of accessibility. Historically, belief systems definitely had a wide range of “content” aimed at different levels of society.

But there also seems to be a real interest in “spiritual” needs, whatever that might mean in particular. And so a purely scientific approach may not be enough in the first place.

Personally I think it may be too much of a past-focused narrative to be very compelling. Most successful religions have a vision of the future, not merely the past.