FOSS developers gift their tools, libraries, frameworks, applications, and corporations use them and then don't OSS their cloud control planes (AWS, Azure, GCP)

FOSS developers gift their tools, libraries, frameworks, applications, and corporations use them and then don't OSS their cloud control planes (AWS, Azure, GCP), UI frameworks (Apple), app stores (Apple, Google), etc, etc. Some give, others take. I guess that's how things work in gift economies in real life, too.