Hashicorp changes the terraform license to BSL.

tl;dr if you use terraform in a product, you're gonna have to lawyer up if you do anything remotely related to what hashicorp does now or in the future.

https://www.hashicorp.com/license-faq#What-are-the-implications-of-this-change-for-end-users-of-HashiCorp's-open-source-products