When I did a contract to deliver a Jenkins CI/CD server for Apple Retail Engineering, their entire internal cloud was basically just VMware running on the last

When I did a contract to deliver a Jenkins CI/CD server for Apple Retail Engineering, their entire internal cloud was basically just VMware running on the last full batch of Apple rack-mount XServe machines. So, not exactly something that I would consider competitive against the likes of Azure or AWS. In fact, AWS now sells services where you can bring your VMware internal clouds over to be officially supported by VMware on AWS.