Spoilers ahead for Avengers: Endgame. As Marvel Studios heads into Phase 4, it’s a very different studio than the one that emerged on this day in 2008 with the launch of Iron Man. It didn’t produce record-breaking behemoths that changed the landscape of blockbuster cinema, and it didn’t have some of its most popular properties at its disposal. X-Men and Fantastic Four were over at 20th Century Fox, and now, through corporate consolidation, those properties are now available to Marvel Studios again. Although fandom has been vocal about reigniting X-Men, I’d argue that …