The RF-System is more expensive when you compare the equivalent products
Cameras:
Canon 6D ($2000) vs. Canon R (2500€) / R6 (2600€)
Canon 5DIV ($3500) / 5Ds ($3700) vs. Canon R5 (4400€)
Lenses Holy Trinity, current prices:
EF 16-35/2.8 vs. RF 15-35/2.8 IS: ca. 2000€ (no longer available) vs 2450€
EF 24-70/2.8 vs. 24-70/2.8 IS: 1950€ vs. 2550€
EF 70-200/2.8IS III vs. RF 70-200IS: 2100€ vs 2850€
EF 100-400L IS vs RF 100-500L IS: roughly 2000€ vs. 3000€
Primes
EF 50L vs. RF 50L: 1500€ vs. 2450€
EF 85L vs RF 85L: ca. 1800€ (not longer available) vs. 2950€
EF 135L vs 135L IS: 1000€ vs. 2500€
APS-C Lenses
EF-S 10-18 vs RF 10-18: 230€ vs 360€
The increase in price is about 50%. One would expect at least the mirrorless Cameras to be cheaper, because you need no Mirror - therefore mirrorless - (and in some cases even no shutter), but instead the prices went up. One could argue, that Canon implemented IS in the Wideangle- and Standard zooms, but also the prices for the ultra-wide slow zooms with IS went up (EF 16-35/4IS vs 14-35/4IS: 1000€ vs. 1400€). The most substancial increase was the prices for the fast primes - more than 50%. Even the price for the nifty-fifty went up (120€ vs 200€), nearly doubling!
Only the Entry level full-frame Camera, the RP was initially cheaper than the entry-level Full-frame DSLR, the 6D. (1300€ vs. ca. 2000€).
I think that we can all agree that the pricing set by Canon locally varies widely. Canon UK/EU appears to be setting an unreasonable markup giving rise to grey market sellers whereas Canon Australia seems to be in line with US pricing and in some cases, we can get cheaper pricing (using USD exchange rate ex-tax) eg R5ii during the recent sales.
Another difference is in manufacturing costs in Japan are based on the Yen exchange rates (not EUR) but you are correct that no mirror box/pentaprism and AF module reduces the manufacturing cost. Eye-controlled AF is an additional component cost though.
What you haven't allowed for is the increased SW development cost. Not just the massive difference in video processing options and eye-AF but also the ongoing SW development costs for new features in firmware releases that did not occur with DLSRs.
The assumption that inflation doesn't impact release pricing seems to be missing. That said, Canon's costs are in Yen and the assumption that USA inflation rates should be applied for comparison doesn't make sense to me.
Another difference is that Canon is all-in on R mount bodies/RF lenses. They have had a massive R&D expenditure to get the mirrorless ecosystem in place over the last ~6 years. This needs to be paid for in the near term with higher unit pricing but will mean additional profits in the long term.
And lastly, EF lenses are competing against RF lenses - at least initially. For the most part, Canon needed to add something new/difference to entice EF lens owners to migrate. Higher IQ, faster AF, different focal ranges eg RF14-35/4 and RF15-35/2.8 vs EF16-35/4 and EF16-35/2.8, lighter weight in general, smaller/collapsible length, higher magnification for RF100/2.8 macro, etc. The EF11-24/4 is much more expensive than the RF10-20/4.
No one is forcing you to buy RF lenses but there are lots of new options that didn't exist in the EF ecosystem.