The Terraform providers, and the underlying library for building them, are still open source. This is why OpenTofu didn't have to fork them. Considering they're

The Terraform providers, and the underlying library for building them, are still open source. This is why OpenTofu didn't have to fork them. Considering they're also used by Pulumi I don't see the provider community going away any time soon, but I definitely see them detaching themselves from Hashicorp.