Open-source software is famously able to be used by anyone for any purpose; those are some of the keystones of the open source definition. But some companies that run open-source projects are increasingly unhappy that others are reaping some of the profits from those projects. That has led to various efforts of "license reform" meant to try to capture those profits. So far, those efforts have just led to non-open-source licenses, thus projects that are no longer open source. We are seeing that play out yet again with Elastic's mid-January announcement that it was changing the license on some of its projects.