Cool Runnings – PostgreSQL's 2nd strike at the Uber blog
blog.2ndquadrant.com
blog.2ndquadrant.com
If you use FOSS, you must be open to communications with the Open Source community. There is a lot of ways to do it. If you're a giant, you can find resources to change the software and contribute with patches, but if you cannot do it, please at least speak openly (or at least privately to some core developers), explaining your needs and issues.
Using FOSS without that is the same as using pirate versions of Oracle or Microsoft products, without buying support subscription.
LuaJIT used this for many of its ports to different architectures, where a company would pay $20k or so to sponsor work to make it run on their platform. Cloudflare sponsored string-specific optimizations for their WAF.