The problem is just going to court and saying "we have nothing to do with it" is both expensive and can end up with them going to trial. If they believe they have nothing to do with the incident, this is their easiest route.

Not trying to defend a big corp like Disney (they have plenty of money and can easily cover it), but I was just involved in a suite brought against me and in the end even though it would have been an "easy win" for us, it still would have cost us more money to fight it out in court than it was to just settle. And that's assuming the trial went our way which is never a guarantee.