I'm in no position to defend HP on all of this... but parts of this are not accurate.
"HP has apparently dropped support for both Amazon EC2 APIs and private cloud Eucalyptus tools. The AWS EC2 APIs are widely used and have become a de facto standard for building cloud apps."
Contrary to what Eucalyptus and AWS want you to believe, EC2 API's are *NOT* the defacto standard for anything other than instances being built on AWS. HP (or any OpenStack-based cloud) do not have to have to incorporate EC2 API's. Additionally, most OpenStack clouds being built today have no interest or requirement to use AWS EC2... it's a red herring argument.