It's too soon to say. Terraform enjoys network effects due to HashiCorp's other tools working well with it out of the box.
In the last 4 years I've spent probably 60-80% of my time writing terraform for various companies and maybe 5% of that involved a hashicorp product, and arguably, it would have been easier deploying it without terraform.
Its main use case is to build cloud infrastructure, not interact with hashicorp products.