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.

What’s the “automating gmail with terraform” angle? G-suite automation? Or GCP?

g-suite.

Can you elaborate on the terraform automation for gmail?

When we first built our user account system, we had to create a google user and add it to relevant groups in admin console whenever we hired someone, before the automation could kick in.

We're tired of that so we're looking into using a terraform provider [1], so that we can declare new users and instantiate their resources with a simple PR.

[1]: https://registry.terraform.io/providers/hashicorp/googlework...