Canon has made it pretty clear the entry level for EOS R will be FF.
From what we have seen sor far, I absolutely do agree with this.
But they also didn't really follow through with this yet. At the moment, capable entry level DSLR can still be bought, with kit lenses, for prices like 550 € (250D, SL3), 690 € (800D, T7i) and ~950 € (850D, T8i and also 80D). Until they have a FF body that comes closer to those price points, there is still quite a barrier to RF entry. The RP with 24-105 4.0-7.1 STM (of course superior to the 18-55 3.5-5.6 crop kits) is 1300 €.
Of course it is just anecdotal, but I have witnessed two people buying their first ILC recently, ending up with a Nikon Z50 kit + one of the 1.8 primes, and a 90D kit + Tamron 35 mm 1.4 respectively. I feel like both are ambitious enough combinations that going FF would have been a consideration, if there was a sub 1000 € RF option with modernized features available.
The question then really becomes what has to be left out in order to hit those price points. In particular, how much of the R6 & R5 advances (sensor speed, IBIS, AF, viewfinder) can be offered at lower prices?
In particular, would sub 1k RF FF require recycling the 6D II sensor again, or can it be done with a modern one? Now that AF performance is heavily tied to the sensor, and the 6D II type DR and speed are really starting to show its age, I think it would create a weird conflict if you will need to chose between modern APS-C sensor and speed (90D, M6 II, potentially M5 II) and recycled FF with reduced speed (i.e. recycling the 6D II and 5D IV sensor again).
While such a tradeoff will be in place, I think it will be harder for Canon to convince the market that there is not point waiting for low end RF APS-C.