The Fantastic 4 had been out of MCU because of Fox. Fox owns X-men and Fantastic 5 Cinematically despite being a Marvel Ip. They suffered the same fate as X-men. Marvel CEO Ike Perlmutter had been sabotaging Fox-owned Marvel IPs for years. He tried to replace Mutants with Inhumans and it backfired with low comics sales. He really pushed hard to make Inhumans happen because he doesn’t want to promote something Marvel doesn’t completely own. Just like Gretchen from Mean girls tried to popularize the word fetch. He even retcons Scarlet Witch and Quicksilver being Magneto’s offspring and make them Inhumans so they can appear in MCU. Fantastic 4 suffered the same fate. They got less prominent in the comics. The last Fantastic 4 film is a flop because of the lack of promotion and controversies.
After Disney purchased Fox, Marvel owns Fantastic 4, X-men, and Deadpool again. The Fox MCU characters are now part of the MCU. The sabotage should not happen in the first place. Marvel will get to own it again anyway. Now damage control needs to be done to make sure the next Fantastic 4 film will do well.
The Fantastic 4 doesn’t have a good history with film adaptations. Marvel didn’t release the 1994 film despite of being complete because they thought it will cheapen the brand. The 2005 version made Chris Evans and Jessica Alba stars but its sequel failed with the ticket sales.
The 2015 version is another reboot that failed to have a direction. It experiences a lot of backlash from the fans and critics liked it neither. On the bright side, The actors who played The Thing and Invisible Woman fell in love and got married because of this film. A New Fantastic 4 movie is currently in development.
Now there is aa New Fantastic 4 movie in development and I hope Marvel learned from their mistakes.