That is farcically ridiculous and failed logic.
If I had been given the option of getting a $50 Canon made RT compatible trigger to work with my 550EX's instead of getting $450 600-EX-RT's I'd have done that, I wouldn't have got as integrated a system as I have, and Canon would have made $200 off me rather than $2,000. This way we are both happy. I am no Canon whore either, I have been running the 550's via Yongnuo RF 602's for years.
I paid $220 for most of my 550EX's new, I am getting around $150 for them now nearly ten years later secondhand, I wrote them down to nothing by 2008, they own me nothing yet they have given me ten years faultless service for $70. I expect similar figures from the 600's.
well, if I'd be coming from 10 years old written-off 550EXes, I'd also see much more sense to upgrade them to 600EXes. But in my case I got a pre-2012 camera model and Canon speedlites that are either still current (430EX II) or were current (580EX II) when I purchased them only about 2 years ago. Plus a 430EX which is maybe 5 years old. All of them used rather sparingly. Would you jump to an all 600EX-RT setup? btw. where I live, the ST-E3 retails from 270 € (=USD 365) and 600EX-RT runs from € 485 (=USD 650) a piece. The Yongnuo trigger is € 100 and I expect their YN-600EX to come in at maybe € 200 ... just to give you an idea, what I am looking at.
Anyway to me its a very minor problem: a few more weeks of occasional optical triggering until the Yongnuos become available.
Canon however has a bigger problem ... they spent R&D money and managed to create a highly beneficial technical advantage for many (potentially all) users of their ecosystem ... and then they don't distribute the goodness (against reasonable charge of course) to as many of their users as possible, but only to some ... 2012-Camera-model owners and 600EX-purchasers - rather than fully leveraging that USP against all their competitors. And driving nice synergies of scale. That's all I am saying.
I have two $7,000 pre 2012 camera bodies, my only post 2012 body is an EOS-M, so what? Canon is offering the RT system with the functionality it has, buy it on that basis or don't, they don't care which you choose, it is their sandbox and they have drawn the line in it, we can play if we want but only up to the line, don't cry that the line isn't further away as they never said it was. I was happy with the RT performance on my pre 2012 bodies, it gave me everything the optical system did but it did it much more reliably via radio. Subsequently I have also bought the YN-E3-RT and like that, but it is not without its own issues, besides, by your logic are not Yongnuo overcharging for the YN seeing as how all they have done is copy Canon's work, put it in $20 worth of parts and then rip us off for $150?
In your situation I'd get either the Phottix Mitros+/Odin or the 600's, because they are the two "best" systems you can buy today, but then I take photos today, and yesterday, and tomorrow, I don't care what Yongnuo might do in a month, or two........, or when the firmware that actually allows it to work on my camera will be available, another month, or two. You pay more for your gear, so what? You get more for it secondhand, look at the total cost to upgrade, that is what we did in the FD to EOS debacle, such that I didn't buy any new Canon products for over ten years (1994-2004). Or wait quietly for six months, see if the YN-600-RT is any good and get that, but if you can wait six months then I don't understand your anxiety now.
Get what you need from what is available when you need it. If you are just out to bitch about life in general fine, but there are plenty more worthy things to bitch about than Canon's implementation of the RT system.