Marvel Studios has been on top of the superhero genre for over a decade, with one of the greatest runs for a franchise ever. This is primarily due to interconnectivity on a massive scale and a consistent quality that has never been seen on screen. The Marvel Cinematic Universe's reign over cinema seemingly peaked with Avengers: Endgame's record-breaking box office total and closed a chapter on the studio's first saga, which centered on the infinity stones.
Source:https://www.cbr.com/marvel-studios-phase-4-necessary-experiment/