What tech companies were these? I was younger in 2007 but i feel like i would remember if companies were openly refusing to participate in war.

Such protests are commonplace at Google: https://www.nytimes.com/2018/04/04/technology/google-letter-...

Yeah, and they still happen even today (there were some recent ones with ICE and Israel), but the companies themselves have still worked in war businesses.

Yes, and the participating employers are quickly fired.