HashiCorp moved Terraform, Vault, Consul, and Nomad to the Business Source License - the open-source version was over

Citing 'vendors taking advantage,' HashiCorp pulled all major products off MPL 2.0 and onto the Business Source License. BSL bans competitive use for four years; after that, code falls back to MPL. The community forked Terraform inside a week as OpenTofu, now a Linux Foundation project with backing from Spacelift, Gruntwork, env0, and Harness. For founders the question stopped being 'should we use Terraform' and became 'do we follow HashiCorp into paid HCP, fork to OpenTofu, or migrate to Pulumi?' IBM acquired HashiCorp the next year - the BSL move was a pre-IPO/pre-sale tightening of monetisation, not a one-off.