I might not be up to speed, is naming this behaviour "source of inspiration" a common industry term to accurately represent an unacknowledged fork by the large

I might not be up to speed, is naming this behaviour "source of inspiration" a common industry term to accurately represent an unacknowledged fork by the large company over the small? It seems an option to not take free labour to build a commercial cloud largely as a wrapper of open-source, and maybe find other ways to support the creators. If one person's labour is that valuable to a company, maybe it will help someone realize that supporting such individuals monetarily might help create the next thing with time that they can't get to today.