I kinda think back to how PG says that the founders are more important than the idea -- That if the idea was worth starting at all, then it could always be pivoted as long as the founders are fearless and excited enough to keep working and applying changes to their idea.

I can't imagine someone not being able to think of an idea within a month -- but I can imagine someone who shuts down all of his own ideas because he's afraid of failure. Following the blog post, someone like this really probably isn't suited for startup life at all. He'd probably find himself in some of the other of the Five Reasons if he gets that far.