Perhaps a more apt term would be freeware. The BUSL is not OSI approved and places restrictions around usage, in an effort to sell some product or service off

Perhaps a more apt term would be freeware. The BUSL is not OSI approved and places restrictions around usage, in an effort to sell some product or service off of a project and prohibit competition. It is not free as in beer either, if you hit such usage. The source is available (hence source available being another terminology) but even Hashicorp has dropped "open source" from nearly every relevant page in understanding that their products no longer have an open source core (see instead "Vault Community" or "Terraform Community"). The general consensus is that no, the BUSL is not OSS as OSI has not blessed it as such: https://opensource.org/licenses/ https://opensource.org/licenses/