That's the least generous, and least logical, possible take, and I'm the opposite of a fan of Amazon or AWS.
If a customer is not multi-region already, and if Amazon hasn't promised multi-region availability, then the customer has simply chosen the wrong product. It's not in anyone's interest for Amazon to waste resources rolling out a product that they can't sell, just because maybe someone wants to expand their existing use.
Exactly. AWS never promises every product in every DC. If you build on it before it's available in a region you need it in, it's a choice and risk you are making
By not doing this, they make it hard for their customers to be multi-regional.
It is easy to spin "customer obsession" any way you like.