I also tend to lean too far to the "Waterhouse" side of the spectrum.
I think a lot of the problem is that people are mentally adding "before you start your startup" to the title, when nobody's actually said so. There's no such thing as "prepared enough" to start a company; you learn what you can and prepare as best you can, then just do it and clean up your messes along the way. The books above will probably help, and some may change how you position your initial idea, but it's not gonna kill you to read them after getting started.
I think a lot of the problem is that people are mentally adding "before you start your startup" to the title, when nobody's actually said so. There's no such thing as "prepared enough" to start a company; you learn what you can and prepare as best you can, then just do it and clean up your messes along the way. The books above will probably help, and some may change how you position your initial idea, but it's not gonna kill you to read them after getting started.