Bullfrog Productions, game featured: Populous, acquired by EA in 1995
Maxis, game featured: Sim City 2000, acquired by EA in 1997
Westwood Studios, game featured: Command and Conquer - Red Alert, acquired by EA in 1998
DreamWorks Interactive LLC, game featured: Medal of Honor, acquired by EA in 2000
Honorable mention to Mythic Entertainment/Bioware, acquired by EA in 2006
Song referenced: Runaway Train - Soul Asylum
The game was never like the early demos. If a demo isn’t playable by the public then don’t assume it was ever actually a playable game in that state. And to be fair, even if it was I’m not really convinced it would’ve been fun.