With a couple UI/UX enhancements, Apple could take over the iOS/MacOS marketshare of these products with Keychain. It's already possible to use keychain in your workflow for password management, it's just not super convenient.
I'd switch from Lastpass, if Apple made it easier to autofill and autogenerate passwords and added support for sharing / teams.
I'd switch from Lastpass, if Apple made it easier to autofill and autogenerate passwords and added support for sharing / teams.