Yeah, they do. But what if you want to move from Android to iPhone or vice versa? That's the big problem regarding these keychains/password managers. Some of them didn't even allow you to export your Passkeys until a few months ago, meaning you were literally locked into their platform.

Remember that your average user has no idea what a passkey is, doesn't remember half of their passwords and has no idea what a password manager is.

If you want to change it maybe tough. It doesn't have to be. Bitwarden has an open source self hosted option(you can also use their service), that can be set as provider in Android and Windows 11. KeepassXC is an option everything is in your kdbx file. Passkeys are so much more convenient and secure. If you do get stuck having to migrate, you can use your password (I would actually prefer just using multiple passkeys.) You don't need to do them all at once. Your average user is probably using whatever their device offers or nothing at all. I'd argue anyone that is tech savvy shouldn't be using either Google or Apple. If your account is disabled, you probably just lost anyway to retrieve your account unless you use a separate email address. I recently discovered cross device auth when a device I had a passkey was able to open my account on my pc that didn't have a passkey. TLDR ther are simple solutions that solve the 'lock in' issue.