Performance is not the only metric. High availability (i.e. no single point of failure) with strong consistency are very important for some.

Is availability not an aspect of performance?

But of course, hence why i referenced multidc transactions.

> Is availability not an aspect of performance?

Not to my understanding. Can you elaborate?

Well, an unavailable service has trivially (perfectly) bad performance. I'm not sure how you'd conceive of performance to exclude availability, or what that conception would give us.