Coincidentally, AWS hasn't open-sourced anything that they use internally. Zilch. Nada. And yet they are using 'open source' developed by another firm (smaller is inconsequential here) to market themselves.

IMO, FOSS licensing is completely broken. Its definitions (of what is free/open) are from a boomer's era that is no longer sustainable. At least I wouldn’t want any of my FOSS projects become “corporate strategy” of any particular proto-nation.