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
They are finally getting re-discovered by younger generations a bit more, but they are often missing from memes like this. Considering how groundbreaking their projects like Wing Commander and of course Ultima were, it is a true shame. They truly fell from the very top and slowly died thanks to EA. (And, admittedly, also in part mismanagement and not being able to overcome the prohibitive cost of physical media i.e. floppy disks and CDs properly)