One problem with this book is that much of it does not make sense for companies who are not already like 37Signals, either in terms of success or business model

One problem with this book is that much of it does not make sense for companies who are not already like 37Signals, either in terms of success or business model. For example, the book says meetings are toxic, and that you should avoid having them. But it does not contain any advice on what to do in the many situations where clients insist on a meeting, even when you know that the meeting is a pointless waste of time. The reason for that is obvious: they are not in a fee-for-service business dictated by a relatively small client roster. They're a mass market company where irritating a single client (or even dozens) only means alienating a minute section of their client base. For many businesspeople, however, this is simply not an option. That's just one example of several. The bottom-line: if you have a business model where you can dictate virtually every parameter of your business, and you're already super-successful, it becomes easy to act like rock stars.