The takeaway is Passkeys are great technology but as implemented by Google, Microsoft, and Apple fall short of what they could be.
This isn't some "owned by the billionaire class". It's an open standard that's why Bitwarden and Proton both have implementations. Big tech of course provided implementations that are not as portable as possible, that's all that's going on here.
There's really not some big conspiracy to kill kittens or whatever. Passkeys are far more secure (and for most people far more usable) than passwords.