You are misconstruing my statements. I am explaining, not defending. For some reason, people seem to think the stuff they want is logical and makes sense to everyone, and therefore it should happen. Personally, I try to live in the real world and understand the reasons things happen as they do (part of being a scientist, I suppose). That means that even for something I want to happen, I try to have a realistic understanding of the factors involved that make it more or less likely to actually happen.
Why should we all agree on that? Personally, I find that Canon's EF and RF lenses meet my needs. The one 3rd party lens I've bought is a Rokinon 14mm f/2.8 that I use (albeit rarely) for astrophotography (although when a narrower FoV works, the RF 28-70/2 delivers equivalent 'star-stopping'). It's a fully manual lens, so if for some reason I wanted to replace mine with an RF version, Canon isn't blocking those. So generally speaking, 3rd party AF lenses for the RF mount don't benefit me at all, since the Canon lenses meet my needs. Worth noting that they do so without the issues occurring that sometimes come up with 3rd party lenses that are reverse engineered to work with Canon bodies (e.g. the peripheral illumination problem a few years ago).
Absolutely wrong. A closed Canon RF mount with a limited Canon RF lens selection benefits Canon, at least that's the logical inference from Canon blocking 3rd parties from making AF lenses for the RF mount. Benefit for Canon is the exact reason the closed Canon RF mount with a limited Canon RF lens selection exists. That is my primary point. You seem to think Canon should open RF the mount because it benefits Canon shooters. Canon's goal is benefit for Canon. Benefit for Canon shooters is only a consideration insofar as it is required to get those shooters to buy more Canon products.
Generally, I agree. But would cheaper lenses made and sold by someone else benefit Canon? If not, which appears to be the case, why should Canon facilitate something that doesn't benefit them? They shouldn't, and they aren't. OTOH, they have licensed the RF mount and AF protocols to Red, because having RF lenses mount natively on Red cameras benefits Canon, enabling them to sell more lenses. That's how this works, and it's unfortunate that you can't seem to grasp these concepts.