Honestly, the humiliation part. I don't get that. Who is humiliating them?
No offense, but I'm not going to bother explaining something as basic as this. You'll either have to do the cognitive work yourself, find someone to explain it to you, or just move on.
It's the cost of doing business and if Disney shrugged off John Carter
That is a
wildly false claim.

Disney abso-f***ing-lutely did
not "shrug off" that disaster, I assure you.
Hit it, Wiki!:
The film's failure led to the resignation of Rich Ross, the head of Walt Disney Studios, even though Ross had arrived there from his earlier success at the Disney Channel with John Carter already in development. Ross theoretically could have stopped production on John Carter as he did with a planned remake of 20,000 Leagues Under the Sea, or minimized the budget as he did to The Lone Ranger starring Johnny Depp. Instead, Stanton was given the production budget requested for John Carter, backed with an estimated $100 million marketing campaign that is typical for a tentpole movie but without significant merchandising or other ancillary tie-ins. It was reported that Ross later sought to blame Pixar for John Carter, which prompted key Pixar executives to turn against Ross, who already had alienated many within the studio.
[...] The night after the premiere, Lynn Collins says she was at another event to promote the movie, when her manager at the time told her "you're just going to have to disappear for a while" due to the mounting perception of the film's failure.
[...] In October 2014, Disney allowed the film rights to the Barsoom novels to revert to the Burroughs estate.
[...] On the 10th anniversary of the film's release, The Hollywood Reporter's Richard Newby considered its longterm impact, observing that it "changed the film landscape, just not in the way anyone intended it to ... [It] was the moment Disney became the servant of sure bets, and Hollywood realized star power was truly gone. That was when we entered the age of name recognition, where familiar characters and concepts—Jedi, superheroes—became worth more than any actor's name".
Oh, and its director, Andrew Stanton, didn't get the chance to direct another live-action movie (or any movie, with the exception of
Finding Dory) for the next 14 years, and even then, it was dumped onto streaming without a theatrical release. That is
not a coincidence.
Please consider doing even a modicum of fact-checking next time you make such a sweeping claim.