I blame monterey bay for that. They kept a female Carcharodon carcharias for 16 days and drew huge attendance, prompting other to copy. They have done it several more times since. To their credit, none of them have died, but several refused food, one attacked other sharks (surprise surprise). They simply are not compatible with captivity.
As an aside, i wish every japaneese whaling and shark finning ship was on the bottom of the ocean.
i also cheered every time a captive orca attacked some at seaworld.
Some creatures thrive in “captivity” (that is to say with humans or with human care), some tolerate it and some simply will not ever accept being kept captive and its wrong to even try.