I would tend to disagree.
First, because not everyone is on AWS.
Second, because even for people on AWS, some of a company's infra isn't on AWS (e.g. gmail).
Third because not every infra setup work has an AWS tool.
To take a personal example, we use multiple infra providers.
Some of our infra is gmail (currently working on automating it with terraform).
Some of it is other infrastructure providers that aren't US-based.
etc.