Alternate title: "Incomprehensibility Is Godliness"
Chicken and Egg Problem of Financial Sustainability
To finance preaching to the choir, you need a choir. How does one get a choir in the first place?
Supposing that you get a choir:
Pro-tip: Preach to the choir [a subset of the general population that agrees with your ideas and is willing to hear them talked about loud, proud, and often, but without much critical analysis of them], and when your books only sell among the choir, pretend that you never wanted to sell them to anyone besides the choir.