sbiddle: My answer to that is why would you call it an ISP rather than RSP?
Maybe in the days when you only had dialup calling it an ISP made sense, but RSP is pretty much the accepted term in the industry these days and certainly the term that's far more commonly used.
You've lost me. Whether dialup or fibre, the provider is still providing Internet service (access), so I'm not sure why you imply that it doesn't make sense now. As for RSP being "far more common", I've never heard it outside Geekzone.
I don't really have a anything more to add...At the end of the day the word RSP is the most commonly used term in the industry and is used by Chorus, all the LFC's, MBIE, TCF and so on. The word ISP is not used by any of these organisations and has not been used for many, many years.
Providers don't just provide "Internet" so the term ISP really is quite outdated.