If everyone can't muster the effort to get it done besides Marvel/Disney doesn't that mean it's not easy?
You really got understand how fukked Hollywood is with nepotism and incompetence. Like if Disney didn't put a coat tail rider business suite producer in charge of Star Wars. It wouldn't fall off a cliff. Just because it's difficult for them to put the right people in charge ... It doesn't change that the MCU formula is like elementary school math up until like phase 3.
So, to a lot people... Whiffing on an MCU conception is an egregiously bad error of such a simple design.
Universe announce their universe before even the 1st film and actually got rid of Dracula Untold from cannon. They hire bum director and writer for Mummy while they just threw money at big time cast.
Godzilla movie universe hit a speed bump, but so did the MCU with Thor 2. It's honestly the only decent one that has gotten off the ground.
WB try to do their Avengers film with 3/5 of Justice League without a Solo film. Which doesn't work.
Disney nearly tank Star Wars with Kathy "FORCE White Women into every film" bullshyt and not having a creative Star Wars Lore guy piloting the narrative.
It's a comedy of errors why these universes don't work... Not because they are hard. It's why people are so hyper critical of these failures. They make it seem hard when it's really not.