It's interesting to imagine taking the pubkey as identity concept to its full extents in situations like this, for example if you could create a cloud account,

It's interesting to imagine taking the pubkey as identity concept to its full extents in situations like this, for example if you could create a cloud account, spin up resources, and authorize payment for them all programmatically without having to enter payment details on a form (because your keypair can authorize payment with the whatever payment method you use)