Earlier quoted context omitted.
This keeps happening: 1. People put a lot of work into building databases. The license choice is OSS / FOSS. 2. Some people in the community (original authors, community leads) make a company around the database and continue developing it for years on end. They sometimes raise venture capital to expand the business. 3. Amazon / Google / Microsoft offer managed versions of the database and make bank on it. Easily mill…
All companies should do this.. if anything so we know what not to use. Any sort of proprietary product (be it fully closed source, source-available, or "open source with limitations") is always a risk. You were happily using database X, but they got acquired by Broadcom and now their product costs 100x what it was before. What do you do now? That's why it is much safer to adopt open source - worst case is the company…
But it's not always the worst case, is it? If the licence is permissive, an hyperscaler can just take is and make a proprietary product out of it.
Hence copyleft licences without a CLA. Nobody could make Linux proprietary because the copyright is shared between so many people/companies.