I’m sure there are individuals who might want to help for moral, political, or monetary reasons. Very likely, they already did reach out with information. Knowing where a hostage is kept does not guarantee being able to get them out. And I sure hope that there is more going on than is publicized.
Obviously, hostages aren’t being kept in the homes of the Chasidei Umos Haolam, so they can’t take them anywhere.
There must be multiple levels, ranging from involvement and reluctant involvement to passive, indifferent, discomfort, theoretical disagreement and opposition.