Hi Ayaz,
It’s currently limited to the way you describe above. Most orgs I know limit the ability to create Office 365 groups which restricts the creation process and therefore the creation of Teams. The global admin would then create the Teams with them as the owners.
It would need someone to look into but a flow may be able to automatically add the global admin as an owner if you create them via Forms, for example.
I would submit a uservoice if you want to see it introduced. The reason I think that Microsoft didn’t add this is because it would be like admins having access to all mailboxes. It would mean that nothing is private to users in the organisation. However, I can see why this is required particularly in environments like education. A high level of moderation and safeguarding is needed.
Hope that answers your question
Best, chris