Having said that, within AWS there are the concepts of "budget" and "budget action" whereby you can modify an IAM role to deny costly actions. When I was doing AWS consulting, I had a customer who was concerned about Bedrock costs, and it was trivial to set this up with Terraform. The biggest PITA is that it takes like 48-72 hours for all the prerequisites to be available (cost data, cost allocation tags, and an actual budget each can take 24 hours)