Hahaha. If only you knew... In Canada at least, they charge more for a business landline with unlimited local calls than they charge for a residential landline with unlimited local calls.
Sounds exactly like what you suggest :-)
Sounds exactly like what you suggest :-)
Note: I don't know about telephony (they do charge more, but I don't know about their SLAs), but it is true for ISPs (I work for one as a programmer).
Now, it is time to validate your home landline phone. Are you really doing no business over it? ;-)
Everything else is just the way they create price discrimination and exploit the customers' perception of value, much the same way that Microsoft have sixty-three jillion versions of Windows.