Disney could possibly buy 20th century fox.

Character rights
Marvel had licensed out the film rights to many of their characters to other studios in the 1990s, starting with the X-Men to 20th Century Fox in 1993. One of the first characters to see the rights returned to Marvel was Black Panther, which were returned to Marvel in 2005, having previously been at Columbia Pictures and Artisan Entertainment. In November 2005, Marvel gained the film rights to Iron Man from New Line Cinema. In April 2006, Thor's rights reverted to Marvel from Sony, and in June, the Black Widow rights reverted to Marvel from Lions Gate Entertainment. That same year, the film rights to Hulk reverted to Marvel Studios from Universal Studios, after the latter failed to enter production on a sequel to Ang Lee's 2003 Hulk film. Universal, however, retained the right of first refusal to distribute future Hulk films.

After being acquired by Disney, Marvel began to reclaim more of their character rights, starting with Blade from New Line Cinema. In August 2012, it was reported that 20th Century Fox was willing to allow the film rights to the superhero Daredevil and his related characters revert to Marvel and Disney, a contracted stipulation that required Fox to begin production on a new Daredevil film by late 2012. Fox had approached Marvel about extending the deadline and becoming a co-financier for the film, but was rebuffed. On October 10, 2012, the Daredevil rights reverted to Marvel Studios, which was confirmed by studio president Kevin Feige on April 23, 2013. On May 2, 2013, Feige confirmed in an interview that the Ghost Rider and Punisher rights had reverted to Marvel from Sony and Lionsgate respectively, as well as reaffirming the acquisition of the Blade rights. It was later revealed in May 2013 that Marvel has also reacquired the rights to Luke Cage from Sony. In an interview with Collider in early May 2013, Kevin Feige stated he believed the Elektra rights were back at Marvel through the Daredevil deal.

In February 2015, Marvel Studios and Sony Pictures Entertainment announced that Spider-Man would appear in the Marvel Cinematic Universe, with the character appearing in Captain America: Civil War and Sony releasing Spider-Man: Homecoming produced by Feige and Pascal on July 7, 2017. Sony Pictures will continue to finance, distribute, own and have final creative control of the Spider-Man films. Marvel Studios will also explore opportunities to integrate other characters of the Marvel Cinematic Universe into future Spider-Man films. In June 2015, Feige clarified that the initial Sony deal does not allow Spider-Man to appear in any of the MCU television series, as it was "very specific... with a certain amount of back and forth allowed." 20th Century Fox was able to change the powers of Negasonic Teenage Warhead for Deadpool by giving Marvel Studios the rights to Ego the Living Planet, who appears in Guardians of the Galaxy Vol. 2. By November 2017, Disney held negotiations with 21st Century Fox to buy portions of the company's assets, such as their film studio 20th Century Fox, which would allow them to regain the film rights to the X-Men and Fantastic Four. The negotiations had ended by the time this news had leaked, though the idea of the potential merger was not abandoned by either company.

After the licensing agreement with Sony that allowed Marvel to have the use of Spider-Man in their shared film universe, the only rights that Marvel Studios does not have access to are the X-Men and Fantastic Four set of characters and Deadpool; all are still in production as separate franchises at 20th Century Fox. Additionally, Marvel CCO Joe Quesada in 2012 believed Namor's rights had reverted to Marvel, but Feige said in August 2013 this was not so. However, Feige expanded in July 2014 saying that Marvel Studios, not Universal Pictures or Legendary Pictures, could make a Namor film, "but it’s slightly more complicated than that. Let’s put it this way – there are entanglements that make it less easy. There are older contracts that still involve other parties that mean we need to work things out before we move forward on it. As opposed to an Iron Man or any of the Avengers or any of the other Marvel characters where we could just put them in." In June 2016, Quesada again stated that, to his knowledge, the film rights to Namor had returned to Marvel.

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