Entirely possible for an enterprise-y or B2B use-case - some clients might want rigid data / network isolation in a separate account / VPC, plus it reduces the blast radius instead of running everything in one big cluster. There are ways of achieving this in a single cluster with a lot of added complexity, and spinning up a new VPC + K8s might be easier if you have the Terraform modules ready to go.
Entirely possible for an enterprise-y or B2B use-case - some clients might want rigid data / network isolation in a separate account / VPC, plus it reduces the blast radius instead of running everything in one big cluster. There are ways of achieving this in a single cluster with a lot of added complexity, and spinning up a new VPC + K8s might be easier if you have the Terraform modules ready to go.