Its Ego.
In the comics as well?
EDIT: NVM thanks
The bolded is why Civil War might be the best in the MCU franchise to me. It feels like the popular thing is to say Cap 3 was basically an Avengers movie, but I never felt that way about it. It's a Captain America movie featuring a huge chunk of the in-universe characters. We don't call solo books with other characters and teams appearing in them "basically a *insert team* book", it feels disingenuous to do the same with Civil War, even if Tony was basically the co-star.
Still, I have complete confidence in Infinity War not being too big for its own good where the heroes are concerned. My worry is Thanos being a center of attention. He needs to be a main character like Loki was in Avengers, not just a means to get these heroes together.
Nah, the Russos pulled off Civil War. They'll do Infinity War right.
Here's to hoping. I'll try to believe.