It sounds like there are companies selling Terraform with a wrapper on top and not paying Hashicorp anything.
I could maybe understand this for Consul or Vault, since those are actual hostable services that could probably be resold - but I don't know of anyone reselling those, either.
Dozens of them out there I wonder with great interest which one of these got hashicorp worries about their wallet enough to make this move. Could it be env0 raising 42M earlier this year?
I always just stuck to vanilla Terraform but recall coming across them at some point.