It’s Just Business….
There are things like industry standard, quality, & shelf impact are things a publisher can see immediately once they look at your book.
As a publisher it’s very difficult to considered knowledgeable and maintain company value amongst professionals when you package
A book incorrectly according to industry standard.
This will determine whether or not you are following general formatting rules or not. And if publishers want to be considered well informed amongst other professionals, it would help if your familiar with publishing guidelines.