One missing point is the support for customers and partners. AWS and Azure provide amazing support experience which emulates and improve what Cisco, HP, IBM did

One missing point is the support for customers and partners. AWS and Azure provide amazing support experience which emulates and improve what Cisco, HP, IBM did in the Enterprise space many years before: TAC, Forums, certifications, partner ecosystem. When you have an issue someone will actually respond to it. I was interested in Google Cloud but their support was non-existent, seems to be that their leadership came from the consumer world where a person is just dumb and their product is always perfect. Specifically I had an issue with Firebase which I found the answer on Stackoverflow eventually (app was down for few hours because Google blacklist my environment by mistake). Since my company relies on high availability, we needed to work from day 0 with AWS on the design and have a person which would be available to respond to queries directly. Looks like with new Google CEO that's changing but just cares about large enterprises . With that in mind AWS and Azure to me will become a binary option.