Yes, the functional difference between interrupted service and undelivered service is obvious. But the ethical difference is slim: If I have paid you for a good or service and you have accepted my cash and then fail to deliver what I paid for you have breached our agreement. If it is accidental, especially if it is for reasons beyond your control, then it is a bad thing, but certainly forgivable. But if I give you money, you accept the money and then say "Nope, I'm not going to deliver for a while because you said something I didn't like", that is as unethical as disabling a service I have paid for.

Following the affiliate link in the review will take you to Amazon. They don't provide a Kindle version. But if you go to O'Reilly's site you can get it in various DRM-free formats for your reader of choice. And yeah, I would prefer the paper version of a cookbook too. I just found it ironic that the only way to get a version for your Kindle was to NOT go to Amazon.