The Marvel Cinematic Universe is currently in a bit of disarray, as the planned "Multiverse Saga" has most definitely not panned out as planned. The general reception of the shared universe has seen a major downturn compared to its heyday, and the planned overarching villain, Kang the Conqueror, has been both a thematic dud and a legal entanglement. Now, actor Jonathan Majors is done in the role, which itself may be wrapped up in the grand scheme of the MCU. This means that Marvel Studios will need a new overarching theme, and adapting one story from the comics in particular can provide this.
Source:https://www.cbr.com/jonathan-majors-fired-house-of-m-can-save-mcu/