AWS and Azure both charge by the hour anyway so it wouldn't but if you wanted you could use Reserved instances and just have their accounts in the same organisa

AWS and Azure both charge by the hour anyway so it wouldn't but if you wanted you could use Reserved instances and just have their accounts in the same organisation. A large part of the profit comes from the upfront risk of buying machines. With this you are just absorbing that risk which may be better if the startup expects to last.