The courts are trying to break the Internet. There has been a temporary restraining order issued in a state court allowing a customer to take a non-portable IP address with them when they leave. Read about the insanity here. This would be a bad thing for service providers if the precedent is set. And provides no measurable gain for consumers. I mean DNS sort of solved whatever problem the petitioner seeks to rectify by keeping their IP address. Frankly I am of the opinion that telephone number portability is stupid as well. I barely remember phone numbers any more, my cell phone has made that practice obsolete.