Which is why- if Canon does make crop R series cameras - they don't need RF-S crop lenses. The 18-45 will work as a wide angle on FF and a standard zoom kit lens for crop. They could also go ultra-wide for FF and wide for crop with the same lens. All other focal lengths can work for both as well and telephotos that will obviously work for both FF and crop will be the major lenses that many crop users will be looking at.
I'm sure price and crop lenses are all part of the "discussion internally" that Canon is allegedly having.
To me, the main advantage of APS-C is that it provides higher pixel density for users of long lenses, e.g., birds/wildlife and sports/action photographers. I've read statements by others in these forums that longer lenses don't benefit as much from being tuned for a smaller sensor, since the image circle and back-focus distance isn't a limiting factor. I'm not a lens designer, but the fact that there are no EF-S or EF-M lenses longer than 250 mm tends to support this statement.
Assuming the majority of R7 advocates primarily use longer lenses, I don't believe Canon has to come out with an entire range of cropped RF lenses like they had in the heyday of EF-S or even the current EF-M lineup.
One possibility is to make RF versions of the EF-M 11-22, 15-45, and 18-150 lenses. The optical formulae might need to be tweaked a little bit due to the longer flange distance of the R, but it's only 2 mm so they might be able to accommodate it with lens element placement (again, I'm not a lens designer). With just those three existing optical designs, they'll have a good, basic lens range covered as kit lenses that will satisfy many users. People who want more than that in terms of range or aperture can use the full frame lenses. It's no different than what they've done for years with xxD bodies and EF-S lenses.
Another possibility is to keep the EF-S 10-18, 18-55, and (maybe) 55-250 lenses in production and tell people who want those focal lengths on a crop R body to use an adapter. Personally, I don't see that as being quite as likely. It will send the message that the R7 is just a one-off to keep the 7D Mark II crowd in the Canon ecosystem (which it might be, but I don't think Canon will be that "in your face" about it).