As i understand google and Microsoft don’t really fit here
Probably the definition should look something like: companies that proactively did actions towards harming open source culture/community/movement. Don’t respect foss licensing, etc
I nominate Gitea for this one, for hijacking the project, and making it for profit organization
Also, Ultimate Guitar with their kido musescore, for basically trying to do the same thing that manga company is trying to do right now
And my favorite… Facebook for their oculus privacy and for threatening to sue everyone who tries to jailbreak or modify their devices
Simple tools is probably not considered open source anymore
P.S. oh! Really also think about Proton, Brave, and Telegram
Three companies that are famous for saying they are foss, but in really it’s often not exactly that
Proton’s and telegram’s servers are not foss
Telegram and brave had many instances of delaying publishing the source, even though they already updated the apps
Also, not sure how about now, but telegram is famous for having not reproducible builds, brave probably too