I have absolutely no skin in this game, but I can think of a few legitimate reasons they passed (assuming they were offered it).

1. Lack of corroboration of the book’s claims, leading to the fear of potentially damaging law suits.
2. Zacharias isn’t that prominent a figure in the US. I doubt anyone outside of evangelical circles knows who he is, and he isn’t the flamboyant figure that is typically needed to draw interest from a wider readership.
3. In the age of Trump, nobody cares if another prominent evangelical figure has had an affair and lied about it, not even the evangelicals themselves, so maybe there just isn’t the market for it.

If the book turns out to be good enough and interesting enough to sell a good number of copies, a publisher might come along later and snap up the publishing rights. It wouldn’t be the first time.

I have absolutely no skin in this game, but I can think of a few legitimate reasons they passed (assuming they were offered it).

1. Lack of corroboration of the book’s claims, leading to the fear of potentially damaging law suits.
2. Zacharias isn’t that prominent a figure in the US. I doubt anyone outside of evangelical circles knows who he is, and he isn’t the flamboyant figure that is typically needed to draw interest from a wider readership.
3. In the age of Trump, nobody cares if another prominent evangelical figure has had an affair and lied about it, not even the evangelicals themselves, so maybe there just isn’t the market for it.

If the book turns out to be good enough and interesting enough to sell a good number of copies, a publisher might come along later and snap up the publishing rights. It wouldn’t be the first time.