Ramblings of an itinerant rocket scientist...

Actually, I'd say that businesses don't have unlimited and arbitrary rights to change the limits on how their services are used. The phone company can *try* to change their TOS to preclude me from having voice conversations with others about religion, say, but I'm likely to ignore those changes and fight back if any attempt is made to cut off my phone service because I called a friend about next week's Bible study group... likewise, Ford could try to take back my 2004 Freestar if they changed their sales contracts retroactively to require all users of their products to drive under posted speed limits, but they'd certainly wind up in court if/when they tried to enforce it.